KR20010090969A - Method for verifying defect management area inforamtion of disc and test apparatus for performing the same - Google Patents

Abstract

PURPOSE: A method for detecting defect management area information of a disc and a test apparatus for performing the same are provided to verify whether defect management area information is normally generated and updated during re-initialization without certification while a defect list is removed. CONSTITUTION: A C-1 disc(201) is a disc having only physical defects to test a disc driving unit capable of recording/playing information on a rewritable disc. A DMA mirror file providing part(203) includes primary defect list and secondary defect list information and provides a DMA mirror file which is test reference information satisfying a condition where a supplementary spare area is not full. A reference disc driving unit(205) is a disc driving apparatus which is modified to test an apparatus capable of recording/playing information on the disc. A C-2 disc(207) is a disc satisfying a DVD-RAM condition of a phase change recording method and having 4.7GB. A unit(209) for driving a disc to be tested is a disc recorder/player capable of recording/playing information on a rewritable disc. A verifier(215) verifies a C-2 disc DMA mirror file(213) by using predicted reference information. After re-initialization is performed while a predetermined defect list existing in a defect management area of the disc to be tested is removed, test information is generated from generated defect management information. The predicted reference information and the test information are compared to provide verification result with respect to the test information.

Description

Method for verifying defect management area inforamtion of disc and test apparatus for performing the same}

The present invention relates to a device capable of recording / reproducing a disc capable of recording / playback, and in particular, a device capable of recording / reproducing a disc normally generates defect management area information of the disc. It relates to a method of verifying whether or not to update and a test apparatus for performing the same.

The above-described recordable / reproducible disc is an optical disc for recording and reproducing information by using a property of light such as a laser. For example, DVD-RAM (Digital Versatile Disc Random Access Memory, hereinafter referred to as DVD-RAM) is an example. have. This DVD-RAM is a rewritable disc. According to the "DVD Specifications for rewritable disc Part1 Physical Specifications version 2.0" standard, the above-described DVD-RAM has four DMAs (DMA1, DMA2, DMA3, DMA4) per side of the disk for managing defects on the disk. Done.

Of these four DMAs, DMA1 and DMA2 are located in the lead-in area adjacent to the inner diameter of the disk as shown in FIG. 1, and DMA3 and DMA4 are located at the outer diameter of the disk. It is located in an adjacent lead-out area. Each DMA is followed by reserved sectors.

Each of these DMAs stores a disc definition structure (weakly referred to as DDS), a primary defect list (weakly referred to as PDL) and a secondary defect list (weakly referred to as SDL). . The above-described DDS includes information on the formatted structure of the disc, such as a disc certification flag, a DDS / PLD update counter, and a starting logical sector number for each zone. The PDL contains information on all defective sectors on the disk found during disk initialization. The SDL contains the sector number and the defective block of the first sector of the defective block (1 error-correction code block) that occurred during disk use. And information about the sector number of the first sector of the spare blocks to be replaced and information about the spare area.

As such, the information stored in the DMA can be read and used immediately, but also includes information that changes according to the location and number of defects present on the disk, and through calculation based on the defect information registered in the DMA. Information obtained is also included. The information obtained through the calculation based on the defect information includes the location information of the start sector number or logical sector number 0 of each region.

Four DMAs per disk exist to prevent erroneous defect management due to errors in the DMA information. In addition, since the DMA information is closely related to the physical sector of data, a removable recording medium such as an optical disc has a problem of compatibility between disc recording / reproducing apparatuses when DMA information is incorrectly recorded and decoded. Will occur.

This includes the recording / playback layer of the disk recorder / player (eg DVD-RAM recorder), the filesystem layer, the host interface layer that connects the host computer and the recorder / player capable of recording and playback, and the physical signal. This is because recording and decoding of the DMA information is performed below the physical disk recording / reproducing device layer when the recording is divided into a physical disk recording / reproducing device (or disk driving device) layer and a recording medium layer.

That is, in the actual file system, only the logical sector number is used to transfer user information to be recorded or reproduced to the disc recording / reproducing apparatus, and the disc recording / reproducing apparatus replaces the logical sector number with a physical sector number to The recording or reproducing process is performed, at which time DMA information is used. Therefore, when DMA information is incorrectly decoded or recorded incorrectly by one disc recording / reproducing apparatus, there is a problem that data cannot be read or written correctly by another disc recording / reproducing apparatus.

Therefore, there is a need for a method capable of confirming whether a disc recording / reproducing apparatus correctly decodes DMA information recorded on a disc, and confirms that the DMA information is correctly generated and updated on the disc.

SUMMARY OF THE INVENTION The present invention has been made in accordance with the above-described demands, and has a defect management area (DMA) upon re-initialization without certification while eliminating a defect list without verifying through a disc recording / reproducing apparatus. Its purpose is to provide a verification method for verifying whether information is created / updated normally.

Another object of the present invention is to remove all defect lists without verifying them through a disc recording / reproducing apparatus so that all kinds of defect information exist in a blank disc and a primary defect list. The present invention provides a verification method for verifying whether or not the defect management area information of a disk created by using the configured test criteria defect management area mirror file is normally generated / updated.

It is still another object of the present invention to determine whether a defect management area (DMA) information is normally generated / renewed upon re-initialization without certification while eliminating a defect list without verifying through a disc recording / reproducing apparatus. To provide a test device to confirm.

1 is a schematic structural diagram of a rewritable disc.

2 is a functional block diagram of a test apparatus according to the present invention.

3 is a diagram illustrating a defect structure of a C-2 test disc type.

4 is an example of a detailed check list for verification included in the verifier shown in FIG. 2.

5 shows a primary defect list (PDL) and a secondary defect list (SDL) of a defect management area of a C-2 disc before reinitialization and a primary defect of a defect management area of a C-2 disc after reinitialization according to the present invention. A block diagram of the relationship between a list and a secondary defect list.

6 is a flowchart illustrating the operation of the verification method according to the present invention.

<Description of the symbols for the main parts of the drawings>

201: C-1 disk 203: DMA mirror file provider

205: reference disk drive 207: C-2 disk

209: Disc drive device for test 215: Verifier

In order to achieve the objects to be achieved by the present invention, a method according to the present invention is directed to a method for verifying a DMA information generation / update function of a recording / reproducing apparatus capable of recording / reproducing a disc having defect management area (DMA) information. (a) Performing a reinitialization mode while removing a predetermined defect list existing in the defect management area of the test disc by using a test disc having test reference information, and then generating the defect management. Generating test information from the information; (b) comparing the test information with the test information predicted by the test reference information and providing the verification result for the test information.

In order to achieve the objects to be achieved by the present invention, an apparatus according to the present invention is for testing a DMA information generation / update function of a recording / reproducing apparatus capable of recording / reproducing a disc having a defect management area (DMA) information. An apparatus, comprising: a test disk having test reference information; After performing the reinitialization mode by removing a predetermined defect list existing in the defect management area of the test disc by using the test disc, the test information is determined from the defect management area information recorded on the test disc. A reference disk drive for generating a; It is preferable to include a verifier that compares the predicted reference information with the test information based on the test reference information and provides a verification result for the test information.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

FIG. 2 is a functional block diagram of a test apparatus for a disk drive apparatus according to the present invention, and includes a C-1 disk 201, a defect management area (hereinafter, referred to as DMA), and a mirror file providing unit ( 203, reference drive 205, C-2 disc 207, drive to be tested 209, C-2 'disc 211, C-2 'Consists of a disk DMA mirror file 213 and a verifier 215.

The C-1 disc 201 tests a disc drive device capable of recording / reproducing information on a disc that can be recorded again, such as a DVD-RAM (Digital Versatile Disc Random Access Memory). It is a test disc which is manufactured so that a physical defect exists artificially. A blank disc in which no information is recorded. The physical defects present in the C-1 disk 201 are used as information known in advance when testing a desired disk drive. The C-1 disc 201 also satisfies the DVD-RAM condition of the phase change recording method having a capacity of 4.7 GB (Giga Bytes) specified in the "DVD specification forRewritable disc version 2.0 standard" for the rewritable disc. The disk is configured to be.

As shown in FIG. 1, the DMA mirror file provider 203 provides information about a disk definition structure (hereinafter, referred to as DDS), a primary defect list (hereinafter referred to as PDL), and a secondary defect list (hereinafter referred to as SDL). And a DMA mirror file, which is a test criterion information that satisfies a condition in which a supplementary spare area (hereinafter referred to as SSA) is not full.

In particular, the DMA mirror file providing unit 203 provides a DMA mirror file configured such that all kinds of defects exist in the PDL. That is, a P-list consisting of information on defective sectors defined by the disc manufacturer in the PDL, a G1-list consisting of information on defective sectors found during the certification process for the disc, and without verification. The test reference DMA information including all G2-lists composed of information on defective sectors moved from the SDL is provided. The additional free area is a free space for linear replacement of a defect that occurs during the use of the disk, and is an area allocated additionally during or after initialization.

In addition, in order to enhance the test effect, when re-initialization is performed in the disk drive device 209 to be tested, a test reference DMA mirror file including defect information at a special location is provided so as to satisfy a condition where error is most likely to occur. . That is, as shown in FIG. 3, a test reference DMA mirror file including defect information configured to concentrate error sectors around a physical sector where a first logical sector should be located is provided to provide a "DVD Specifications for rewritable disc Part 1 The Physical Specifications version 2.0 "specification satisfies all cases of the algorithm.

In addition, the first sector and the last sector of each zone are treated as errors, and the remaining sectors are generated by setting a defective sector so that the sum of the available sectors of each zone is not 16 multiples. Provide a test criteria DMA mirror file configured to: The above-described mirror file is a file having the same contents as the actual file but physically existing at a location different from where the actual file can be located.

The reference disc drive unit 205 is a modified test disc drive unit for testing a recording / reproducing apparatus capable of recording / reproducing information on a disc. When the C-1 disk 201 is installed and the DMA mirror file serving as the test reference information is provided from the DMA mirror file providing unit 203, the reference disk drive unit 205 converts the provided DMA mirror file into the C-1 disk 201. And C-2 disc 207 recorded on the back panel. At this time, the test reference DMA mirror file recorded on the C-1 disk 201 is recorded regardless of the physical defects present in the C-1 disk 201. Therefore, the C-2 disk 207 is a disk on which a test reference DMA mirror file created assuming a reference defect situation for the above-described test is recorded irrespective of a physical defect existing in the C-1 disk 201, so that C The DMA recorded on the -2 disc 207 is information known to the user. The C-2 disc 207 can satisfy the DVD-RAM condition of the phase change recording method having a capacity of 4.7 GB (Giga Bytes) specified in the "DVD specification for Rewritable disc version 2.0 standard" for the rewritable disc. The disk is configured to be.

In addition, the reference disk drive unit 205 is installed when the C-2 'disk 211 that is re-initialized with clearing G2-list and SDL is installed without the verification described later. The DMA information recorded on the C-2 'disk 211 is directly read, and the read C-2' disk DMA mirror file 213 is output as test information. In this case, the test information may be some information existing in the C-2 'disk DMA mirror file 213.

The disc drive device 209 to be tested is a disc recording / reproducing device capable of recording / reproducing information on a disc which can be recorded again. When the C-2 disk 207 configured as described above is installed, the test target disk drive 209 reinitializes the G2 list contained in the PDL of the DMA and the defect information contained in the SDL without retesting. Perform the process.

Accordingly, when the above-described re-initialization is normally performed in the test target disk drive device 209, the DMA of the C-2 'disk 211 is removed from the G2 list and SDL present in the DMA of the C-2 disk 207. The DMA is created / updated so that the DMA is recorded. The C-2 'disc 211 is a C-2 disc 207 in which the reinitialization mode set in the disc drive device 209 under test has been performed, and the "DVD specification for Rewritable disc version" The C-2 'disk 211 is configured to satisfy the DVD-RAM condition of the phase change recording method having a capacity of 4.7 GB (Giga Bytes) specified in the 2.0 specification. Installed in the to output the test information as described above.

The test information output from the reference disk drive 205 is provided to the verifier 215. The providing method may be implemented to be directly provided by the reference disk drive 205.

The verifier 215 predicts reference information about the DMA to be obtained when the process to be reinitialized without removing the G2 list and the SDL without the C-2 disk 207 being tested by the disk under test 209. (Or expected value) is used to verify the C-2 'disk DMA mirror file 213. The predicted reference information is set in the verifier 215 in consideration of the physical defect information of the test reference DMA mirror file provided from the DMA mirror file providing unit 203 and the pre-provided C-1 disk 201, or as shown in FIGS. It may be implemented to have a DMA information table as shown in FIG. 4D in advance.

4A is a check list that may be included in the verifier 215 for DMA verification, including an error condition of DMA, a DDS / PDL and SDL update counter, and DMA contents. ) Items, etc.

The DMA error status item checks whether an error exists in the DMA existing in the lead-in area and the lead-out area, respectively. The errors are not corrected in the four DMA1, DMA2, DMA3, and DMA4. If an uncorrected error is found in any one of the DMAs, the verification result may indicate that the disk drive under test 209 fails to create / update the DMA of the C-2 disk 207. So that it is output. The output method can be implemented in the form of displaying the failure so that the user can recognize. If the DMA creation / update fails in this way, the user must retry the test from the beginning using a new test disc.

DDS / PDL and SDL update counter items are tested while re-initializing, DDS / PDL update counter values in four DDS1, DDS2, DDS3 and DDS4 and DDS / PDL update counters in four SDL1, SDL2, SDL3 and SDL4. It is checked whether the "M + k" value representing the value has a value by which "M" is "previous value" and "k" is "1". This is because the DDS / PDL update counter value is incremented by 1 each time the DDS / PDL is updated or rewritten. Then, it is checked whether all eight DDS / PDL update counter values present in DMA1, DMA2, DMA3, and DMA4 are the same.

In addition, the value by "N" being "previous value" and "k" being "1" whose "N + k" value which shows the SDL revision counter value in four places SDL1, SDL2, SDL3, SDL4 Check if it has This is because the SDL update counter value is also incremented by 1 each time the SDL is updated or rewritten. Then, it is checked whether four SDL update counter values are the same.

Also, it is checked whether the DMA contents of the four places (DMA1, DMA2, DMA3, DMA4) are all the same.

FIG. 4B is a check list that may be included in the verifier 215 to verify the DDS structure, and includes a DDS identifier, a Disc Certification flag, a DDS / PDL update counter, and a number of groups ( Number of Groups, Number of zones, Location of Primary spare area, Location of first logical sector number (Location of LSN0), Location of start logical sector number of each zone (Start LSN) for each zone).

That is, it is checked whether the DDS identifier is "0A0Ah", and it is checked whether the value of the bit position b7 indicating whether it is in-progress among 1-byte disk verification flags is "0b". At this time, if the value of the bit position b7 is "0b", the formatting is completed, and if "1b", the formatting is in progress, and if "1b", the verifier 215 recognizes that the formatting has failed. Further, it is checked whether all of the reserved bit positions b6 to b2 are "0b" among the disk verification flags, checks whether the value of the bit position b1 indicating the user verification flag is "1b", and indicates the bit position indicating the disk manufacturer verification flag. Check if the value of b0 is "1b".

To check the DDS / PDL update counter, check whether the value of M representing the DDS / PDL update counter is the "previous value" and the value of k representing the increment of the counter is "1", and the number of groups is one. It checks whether it is "0001h" and "0023h" which indicates whether there are 35 regions.

Also, it is checked whether the first sector number of the initial free space is "031000h" and the sector number of the last sector is "0341FFh", and the position of the first logical sector number LSN0 is determined by the number of defects registered in the PDL. Check if it is determined. Then, it is checked whether the starting logical sector number of each region, that is, each starting logical sector number of the second area (Zone 1) to the 35th area (Zone 34) is determined by the number of defects registered in the PDL. Here, the defect registered in the PDL takes into account both the physical defect existing on the C-1 disk 201 and the defect registered in the PDL of the reference DMA mirror file provided by the DMA mirror file providing unit 203. .

Also, it is checked whether all remaining spare areas (byte positions 396 to 2047) of the DDS structure are "00h".

Check items for checking the PDL structure include a PDL identifier, a number of entries in the PDL, an Integrity of PDL entry, and an unused area as shown in FIG. 4C. Un-used area).

That is, it is checked whether the PDL identifier is "0001h", and the number of items in the PDL is a physical defect of the C-1 disk 201 and a defect included in the PDL of the reference DMA mirror file provided from the DMA mirror file provider 203. Indicative of the number, the configuration state of each PDL item checks the item type and defective sector number. Here, the PDL item type checks whether it has "00b" indicating a known P-list existing in the C-2 disk 207 and "10b" indicating a G1_list which is a defective sector generated during user verification, and converts the SDL. It is checked whether or not " 11b " indicating the G2 list generated by the &quot;

5, the P_list 511 and the G1_list 513 of the old PDL 510 existing in the C-2 disk 207 are C-2 'when performing the re-initialization mode according to the present invention. This is because defect information existing in the G2_list 515 of the old PDL 510 is deleted while being registered to remain in the P_list 531 and G1_list 533 of the new PDL 530 existing in the disk 211. .

Then, the defective sector number of the PDL checks whether the sector numbers are written in ascending order from high order, and checks whether the unused PDL area (Un-used area) is "FFh".

As shown in FIG. 4D, check items for checking the SDL structure include an SDL identifier, an SDL update counter, a start sector number of SSAs of secondary free space, and a logical sector. Total number of logical sectors, DDS / PDL update counters, Spare area full flag, Number of entries in SDL, Integrity of SDL entries , Unused SDL area, and so on.

That is, to check whether the SDL identifier is "0002h", and to verify the SDL update counter item, whether the N value representing the SDL update counter is "previous value" and the value of k representing the increment value of the counter is "1". Check it. To verify the DDS / PDL update counter item, it is checked whether the M value representing the DDS / PDL update counter is the "previous value" and the k value representing the increment value of the counter is "1".

In addition, the free space pool flag checks whether or not the secondary free space is full, and checks whether the number of items in the SDL is set to " 0 " indicating that there is no general. In addition, since information should not exist in the byte position indicating the configuration state of the SDL item and the free space state, it is checked whether it is set to "00h" and "FFh" indicating unused free space.

This is because when the process of reinitializing the SDL list without removing the SDL list is normally performed by the disk drive 209 under test, the old SDL 520 existing in the C-2 disk 207 as shown in FIG. This is because all the defect information registered at is deleted.

The verifier 215 compares the reference information set as shown in FIG. 4 with the information present in the C-2 'disk DMA mirror file providing unit 203 so that the test target disk drive device 209 does not test the G2_list 515. Upon reinitialization while removing the old SDL 520, it is verified whether or not the DMA of the C-2 disk 207 is normally created / updated.

The verified result is output as a test result for the mode re-initialized by removing the G2_list and the SDL without testing the disk drive 209 under test. The output method may be implemented to be displayed in a form that can be recognized by the user. To this end, the device according to the present invention can be implemented to further include a separate display means. Accordingly, when the disk drive device under test 209 performs the reinitialization mode without removing the G2_list and the SDL defect information without verification, the user normally generates the DMA of the installed disk and the generated defect information in the DMA. You will find out whether or not you are updating.

6 is an operational flow diagram of the verification method according to the present invention, in which the C-1 disk 201, which is a blank disk having the same conditions as in FIG. 2 described above in step 601, has the same conditions as in FIG. The test reference DMA mirror file is recorded to create a C-2 disc 207.

Next, in step 602, the C-2 disk 207 is installed in the disk drive device 209 to be tested, and the C-2 disk 207 is reinitialized. At this time, the reinitialization causes the defect list to be removed without full certification of the C-2 disc 207. At this time, the defect list to be removed is G2-list and SDL included in the PDL.

Then, the DMA mirror file recorded on the C-2 'disk 211 reinitialized in step 603 is read out, and the DMA mirror file 213 read out in step 604 is verified. Verification is performed using the same predicted reference information (or expected values) as made in the verifier 215 of FIG. 2 described above. That is, it is checked whether all the defect information registered in the G2-list and the SDL of the PDL is removed. When the verification is completed, the verification result is output in step 605 so that the user can evaluate the function of creation / update for the DMA in the above-described reinitialization mode of the disk drive 209 under test.

As described above, the present invention provides a disc recording / playback for a C-2 disc created using a blank disc on which no information is recorded and a reference DMA mirror file suitable for a test environment containing all kinds of defect information. By re-initializing while removing defect lists such as G2 list and secondary defect list (SDL) without certification, and then verifying the DMA present on the disc and testing the corresponding disc recorder / player You can check the DMA creation / update function of the disc recording / playback device you want in a short time, and you can make and use your own C-2 discs containing all kinds of defect information by using the standard DMA mirror file. It is possible to prevent the economic loss by the manufacturer separately manufacturing and providing the test C-2 disc described above.

Claims (41)

A method for verifying the DMA information generation / update function of a recording / reproducing apparatus capable of recording / reproducing a disc having defect management area (DMA) information, the method comprising: (a) Performing a reinitialization mode while removing a predetermined defect list existing in the defect management area of the test disc by using the test disc having test reference information, and then generating the defect management. Generating test information from the information; (b) comparing the test information with the reference information predicted by the test reference information and providing a verification result for the test information. The verification method as claimed in claim 1, wherein the step (a) performs the reinitialization mode without certifying the test disk. The method of claim 1, wherein the test criterion information of the step (a) is configured in the form of a mirror file. The method of claim 1, wherein the test criterion information of the step (a) is configured in the form of a defect management area mirror file (DMA irror file) configured to have all kinds of defects in the primary defect list (PDL). Verification method. The verification method according to claim 4, wherein the step (a) performs the reinitialization mode while removing the G2 list and the secondary defect list (SDL) existing in the defect management area of the test disc. The method of claim 5, wherein the test information is configured in the form of a mirror file. 7. The method of claim 6, wherein the step (b) confirms the presence or absence of the G2 list and the secondary defect list (SDL) in the test information. 8. The verification method according to claim 7, wherein the step (b) further checks whether the P list and the G1 list included in the test reference information remain in the test information. The method of claim 6, wherein step (b) (b1) verifying a structure of a defect management area (DMA) of the test information; (b2) verifying a disk definition structure (DDS) of the test information; (b3) verifying a structure of a primary defect list (PDL) of the test information; (b4) verifying a structure of the secondary defect list (SDL) of the test information. The method according to claim 9, wherein the error state of the DMA, the DDS / PDL, the SDL update counter, and the DMA contents are used as check items for verifying the structure of the defect management area (DMA) in the step (b1). Verification method comprising the. The method of claim 10, wherein step (b1), (b1-1) checking whether an error exists in any one of a total of four DMAs each having two positions in the lead-in area and the lead-out area of the test disk; (b1-2) whether the DDS / PDL update counter value in the four DDSs and the DDS / PDL update counter value in the four SDLs are "previous values", the increment value of the counter is "1", and the DDS / Checking that the PDL update counters are all the same; (b1-3) checking whether the SDL revision counter value in the four SDLs is the "previous value", the increment value of the counter is "1", and the SDL update counters are all the same; And (b1-4) checking whether all four DMA contents are the same. The method of claim 9, wherein in step (b2), a check item for verifying the structure of the DDS includes a DDS identifier, a disk verification flag, a DDS / PDL update counter, a number of groups, a number of areas, a position of an initial free space, and a first position. A verification method comprising a first logical sector number position and a starting logical sector number position of each region The method of claim 12, wherein step (b2), (b2-1) checking an identifier of the DDS; (b2-2) checking whether the bit value indicating whether the disk verification flag is in progress is "0b" and whether the bit value indicating the disk manufacturer verification and the bit value indicating the user verification is "1b"; (b2-3) checking whether the DDS / PDL update counter value is a "previous value" and the increment value of the counter is "1"; (b2-4) checking the number of groups; (b2-5) checking the number of regions; (b2-6) checking the first sector number of the initial free space and the sector number of the last sector; (b2-7) checking whether the first logical sector number position is determined by the number of defects registered in the PDL; (b2-8) checking whether the starting logical sector number of each region is determined by the number of defects registered in the PDL. 10. The method of claim 9, wherein the checking item for verifying the PDL structure in step (b3) includes a PDL identifier, the number of items in the PDL, and a configuration state of the PDL items. The method of claim 14, wherein step (b3) (b3-1) checking the PDL identifier; (b3-2) checking whether the number of items in the PDL matches the number of defects registered in the PDL; (b3-3) checking the PDL list, the G1 list, and the G2 list in the configuration state of the PDL item. 10. The method of claim 9, wherein in step (b4), a check item for verifying the SDL structure includes an SDL identifier, an SDL update counter, a start sector number of a secondary free space (SSA), a total number of logical sectors, and DDS / A PDL update counter, a free space pool flag, the number of items in the SDL, and a configuration state of the SDL items. The method of claim 16, wherein step (b4), (b4-1) checking the SDL identifier; (b4-2) checking whether the SDL update counter value is a "previous value" and the increment value of the counter is "1"; (b4-3) checking whether the DDS / PDL update counter value is a "previous value" and the increment value of the counter is "1"; (b4-4) checking whether the starting logical sector number and the total number of logical sectors of the SSA are set to match the size of the secondary free space designated by the user; And (b4-5) The free space pool flag indicates a state in which the secondary free space is not full, the number of items in the SDL is set to "0" indicating that there is no item, and whether or not information on the SDL item does not exist. Verification method comprising the step of checking. The verification method as claimed in claim 1, wherein the test disk includes defect information at a position capable of satisfying a condition in which an error is likely to occur when reinitialization of step (a) is performed. 19. The method of claim 18, wherein the test disk is configured to treat the first sector and the last sector of each zone as an error and not add 16 times the sum of the available sectors of each zone. The method of claim 1, wherein the verification method is (c) recording the test criterion information on a blank disk to generate the test disk. 21. The verification method as claimed in claim 20, wherein step (c) records the test criterion information on the blank disk regardless of the physical conditions of the blank disk. An apparatus for testing a DMA information generation / update function of a recording / reproducing apparatus capable of recording / reproducing a disc having defect management area (DMA) information, the apparatus comprising: A test disc having test reference information; Defect management area information recorded on the test disc after performing the reinitialization mode by removing the predetermined defect list existing in the defect management area of the test disc by using the test disc. A reference disk drive for generating test information from the apparatus; And a verifier that compares the predicted reference information with the test information based on the test criterion information and provides a verification result of the test information. 23. The test apparatus according to claim 22, wherein the reference disk drive generates the test information from the test disk that has performed the reinitialization mode without verifying the test disk. The test apparatus of claim 22, wherein the test reference information is configured in the form of a mirror file. The test apparatus according to claim 22, wherein the test reference information is configured in the form of a defect management area mirror file configured to include a list of all kinds of defects. The test apparatus according to claim 25, wherein the predetermined defect list removed from the recording / reproducing apparatus is a G2 list and a secondary defect list. The test apparatus according to claim 26, wherein the test information is configured in the form of a mirror file. 28. The test apparatus of claim 27, wherein the verifier is configured to confirm the presence or absence of the G2 list and the secondary defect list (SDL) in the test information. 29. The test apparatus according to claim 28, wherein the verifier is configured to check whether the P list and the G1 list included in the test criterion information remain in the test information. 28. The system of claim 27, wherein the verifier verifies the structure of a defect management area (DMA) of the test information, verifies a disk definition structure (DDS) of the test information, and the primary defect list (PDL) of the test information. And verify the structure of the second defect list (SDL) of the test information. The test apparatus according to claim 30, wherein the verifier is configured to include an error state of a DMA, a DDS / PDL, an SDL update counter, and DMA contents as a check item for verifying a structure of the defect management area (DMA). . 32. The system of claim 31, wherein the verifier checks whether any one of a total of four DMAs present in each of two positions in the lead-in area and the lead-out area of the test disk exists, and the four DDSs are present. Checks whether the DDS / PDL update counter value in the SDS and the DDS / PDL update counter value in the four SDLs are " previous value ", the increment value of the counter is " 1 " Configured to check whether the SDL revision counter value in the four SDLs is the "old value", the increment value of the counter is "1" and the SDL update counters are all the same, and check whether all four DMA contents are the same Test device, characterized in that. 31. The apparatus of claim 30, wherein the verifier is a check item for verifying the structure of the DDS, and includes a DDS identifier, a disk verification flag, a DDS / PDL update counter, a number of groups, an area number, an initial free space position, and a first logical sector number. And a starting logical sector number position of each region. 34. The apparatus of claim 33, wherein the verifier checks an identifier of the DDS and checks whether a bit value indicating whether the disk verification flag is in progress is "0b", a bit value indicating disk manufacturer verification, and a bit value indicating user verification. Check whether it is "1b", whether the DDS / PDL update counter value is "previous value" and the increment value of the counter is "1", check the number of groups, check the number of regions, and Check the first sector number of the initial free space and the sector number of the last sector, check whether the first logical sector number position is determined by the number of defects registered in the PDL, and the starting logical sector number of each area is And check whether it is determined by the number of defects registered in the PDL. The test apparatus according to claim 30, wherein the verifier includes a PDL identifier, a number of items in the PDL, and a configuration state of the PDL items as check items for verifying the PDL structure. 36. The PDL and G1 list of claim 35, wherein the verifier checks the PDL identifier, checks whether the number of items in the PDL matches the number of defects registered in the PDL. And the G2 list is configured to check if there is no. 31. The method of claim 30, wherein the verifier is a check item for verifying the SDL structure, the SDL identifier, the SDL update counter, the start sector number of the secondary free space (SSA), the total number of logical sectors, and the DDS / PDL update counter. And a free space pool flag, the number of items in the SDL, and the configuration state of the SDL items. 38. The DDS / PDL update counter value according to claim 37, wherein the verifier checks the SDL identifier, checks whether the SDL update counter value is a "previous value" and the increment value of the counter is "1". Check whether this "previous value" and the increment value of the counter are "1", and check whether the starting logical sector number of the SSA and the total number of logical sectors are set to match the size of the secondary free space specified by the user. Check that the free space pool flag indicates that the secondary free space is not full, the number of items in the SDL is set to " 0 " indicating that there is no item, and check whether there is no information on the SDL items. A test device, characterized in that configured. 23. The test apparatus according to claim 22, wherein the test disc includes defect information at a position that can satisfy an error prone condition when the reinitialization is performed. 23. The test apparatus according to claim 22, wherein the reference disk drive further comprises a function of recording the test reference information on a blank disk to generate the test disk. 41. The test apparatus according to claim 40, wherein the reference disk drive writes the test reference information to the blank disk regardless of the physical conditions of the blank disk.