JP2004021632A - Recording and reproducing method for specific information to storage unit having unused area in storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording and reproducing method for specific information to a storage unit having an unused area in a storage medium. <P>SOLUTION: In this method, a PC carries out the following processes: a management process for retrieving the storage unit having the unused area following an ECB code in a storage area of a FD after starting an OS of the PC and forming a second FAT 6 about all the matching storage units to store them in a predetermined position in the storage area 2, a specific information storage process for retrieving the storage unit having the unused area with the dimension allowing storage of an ID 11 and the like, storing the ID 11 and the like in the unused area after the ECB code of the storage unit satisfying a retrieval condition when storage is commanded, and storing information about the storage unit used for storage in a second FAT 6, and a specific information reproduction process for referring to the second FAT 6 for obtaining information about the storage unit storing the ID 11 and the like and reading the ID 11 and the like from the area following the ECB code of the storage unit matching the obtained information when reproduction is commanded. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for recording and reproducing specific information on a recording unit having an unused area after an ECB code after recording various information by using a removable recording medium usable in an information recording and reproducing apparatus such as a personal computer. It is about.
[0002]
[Prior art]
Removable recording media usable in information recording / reproducing devices such as personal computers include a flexible disk (FD), a magneto-optical disk (MO), a ZIP (registered trademark) disk, a removable hard disk, a rewritable CD, a rewritable DVD, and a flash. There is a memory etc. Hereinafter, the area configuration of the flexible disk (FD) will be described as an example.
[0003]
As shown in FIG. 8, the flexible disk (FD) includes a management area 51 arranged at the beginning of the entire area (outermost circumference of the disk) and a recording area 52 arranged adjacent to the end of the management area 51. It comprises. In the management area 51, as shown in FIG. 8, medium type information (for example, 2HD), volume ID information (for example, AX1247), file name (for example, XXXX.XXX), start sector information, link sector information, and byte Various management information including a file storage information recording table (hereinafter, referred to as FAT) including numerical information is recorded. On the other hand, the recording area 52 has a plurality of divided recording units, and various information such as data and programs are recorded using at least one recording unit.
[0004]
In the management area 51 and the recording area 52, a sector is used as a recording unit. The recording capacity of one sector is, for a flexible disk (FD), a ZIP (registered trademark) disk or a part of a magneto-optical disk (MO). Is 512 bytes, as in the case of. In the case of a rewritable CD (CD-RW) or rewritable DVD (DVD-RAM, etc.), one sector is 2048 bytes, and in the case of a removable hard disk or a flash memory, as in the case of a built-in hard disk, The recording capacity of one sector is a recording capacity (an integral multiple of 16 KB; for example, 16 KB to 4096 KB) according to the file system to be used. When a flexible disk (FD) is used in a personal computer using WINDOWS (registered trademark) XP as an operation system (OS), "80 tracks, 1 track = 18 sectors, 1 sector = 512 bytes, double-sided recording" Due to the format, the recording capacity of the 2HD format FD is
80 × 18 × 512 × 2/1024 = 1440 KB (commonly known as 1.44 MB)
It is.
[0005]
The recording unit is defined as shown in FIG. 9A. An STF code (1 byte) indicating the start of the recording unit is arranged at the head of the recording unit. A recording area used for recording information is arranged. At the end of the recording area, an EOF code (1 byte) indicating the end of the recording unit and an ECB code (1 byte) indicating an error check of the recording unit are arranged. . Therefore, in a recording medium such as a flexible disk (FD) in which 1 sector = 512 bytes is a recording unit, 512 bytes−3 bytes = 509 bytes is the maximum recording capacity that can be recorded in one recording unit, and 509 bytes is a maximum. When various types of information such as data and programs exceeding the size are recorded, they are recorded over a plurality of recording units. In this case, when the information is divided into 509 bytes, the recording unit in which the 509-byte information is recorded has no unused area as shown in FIG. 9B, but is less than 509 bytes (509 Since a recording unit in which (byte-N bytes) information is recorded has an N-byte unused area as shown in FIG. 9C, a recording unit having an unused area outside the recording area may occur. become.
[0006]
Such an unused area outside the recording area is located outside the area sandwiched between the STF code and the EOF code, and therefore is not recognized by the operation system (OS) of the information recording / reproducing apparatus such as a personal computer. Can not be used as Further, even if information can be recorded by taking some measure, the information cannot be read via the OS.
[0007]
[Problems to be solved by the invention]
The recording unit having an unused area outside the recording area as described above continues to increase by repeatedly recording information on the recording medium, but at present, the operation system of an information recording / reproducing apparatus such as a personal computer. Since the (OS) does not manage such that the unused area of the recording unit having the unused area outside the recording area is used for recording the information, the recording having the unused area outside the recording area is not performed. The unused space of the unit remains unused. In this case, the unused area of the recording unit having an unused area outside the recording area has a feature that “information cannot be recorded / reproduced via the OS”, and is “invisible during recording / reproduction via a normal OS”. , A special recording area ". Therefore, when used as a special recording area, it is suitable for recording (storing) information relating to security such as an ID and a password.
[0008]
An object of the present invention is to provide a method of recording and reproducing specific information on a recording unit having an unused area of a recording medium.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, a first invention according to claim 1 is a recording medium usable in an information recording / reproducing apparatus such as a personal computer, wherein the recording medium is arranged at the head of an entire area and has a file storage information recording table. And a management area in which management information is recorded, and various information such as data and programs are recorded using at least one of a plurality of divided recording units, which is arranged adjacent to the end of the management area. When recording and reproducing specific information on a recording unit having an unused area after the ECB code after recording of the various information by using a recording medium having a recording area having A first step of starting when the recording medium is recognized after the start and searching for a recording unit having an unused area after the ECB code after recording the various information; A management step of creating an index for all the recording units having a recording area and recording the index at a predetermined position in the recording area; and A third step of searching for a recording unit having an unused area of a possible size, a fourth step of recording the specific information in an unused area after the ECB code of the recording unit satisfying the search condition, and the recording A specific information recording step comprising: a fifth step of recording information relating to a recording unit used in the index; and a recording which is started when a reproduction instruction of the specific information is issued, and records the specific information with reference to the index. A specific information reproducing step including: a sixth step of acquiring information relating to the unit; and a seventh step of reading the specific information from an area after the ECB code of the recording unit corresponding to the acquired information. Wherein the information recording and reproducing apparatus executes.
[0010]
According to the first invention, after recording various information, specific information is recorded / reproduced for a recording unit having an unused area after the ECB code using a recording medium usable in an information recording / reproducing apparatus such as a personal computer. At the time of recording, the information recording / reproducing apparatus is started up at the time of recognizing the recording medium after the operation system of the information recording / reproducing apparatus is started up, and a recording unit having an unused area after an ECB code after recording the various information. And a second step of creating an index for all recording units having an unused area and recording the index at a predetermined position in the recording area, and recording the specific information. A third step of searching for a recording unit having an unused area large enough to record the specific information and being activated at the time of the command, and an ECB of the recording unit satisfying the search condition Performing a specific information recording step including a fourth step of recording the specific information in an unused area after the recording and a fifth step of recording information on a recording unit used for the recording in the index, A sixth step of starting the reproduction of the specific information and acquiring information on a recording unit in which the specific information is recorded by referring to the index; and an area after the ECB code of the recording unit corresponding to the acquired information. Since the specific information reproducing step including the seventh step of reading the specific information from the storage medium is executed, it is possible to provide a method of recording and reproducing the specific information with respect to a recording unit having an unused area of the recording medium.
[0011]
An eighth step of detecting presence / absence of a recording command via the operation system for a recording unit in which the specific information is recorded, resident in an operation system of the information recording / reproducing apparatus after recognition of the recording medium; A ninth step of searching for an alternative recording unit having an unused area large enough to record the specific information upon detection, and setting the specific information in an unused area after the ECB code of the alternative recording unit satisfying the search condition. A tenth step of moving and recording, and an eleventh step of recording information on the alternative recording unit used for the recording in the index and deleting information on the recording unit used in the recording in the fifth step from the index. The information recording / reproducing apparatus executes the specific information transfer / recording step consisting of: That the position of the recording unit to record the specific information according to the recording operation information via the system changes, preferred for higher security.
[0012]
The management step, the specific information recording step, and the specific information reproducing step are executed by a program pre-installed in the recording medium, but only for a desired recording medium, "for a recording unit having an unused area of the recording medium. It is preferable to add a function of recording and reproducing specific information.
[0013]
The management step, the specific information recording step, the specific information reproducing step, and the specific information transfer recording step are executed by a program pre-installed in the recording medium. And a function of recording / reproducing specific information with respect to the recording unit.
[0014]
It is preferable that the specific information is information on security such as ID information and password information in order to use the recording medium as a “key medium recording an ID or the like”.
[0015]
The specific information is information related to security such as ID information and password information and a security management program using the information. The recording medium is used as a “key medium recording an ID or the like” and the recorded ID. It is preferable to execute the security management program by using the security management program.
[0016]
The specific information is provided with management information for managing the information itself, in order to facilitate recording and reproduction of the specific information on an unused area of a recording unit having an unused area outside a recording area. preferable.
[0017]
The recording medium is a removable recording medium such as a flexible disk, a magneto-optical disk, a ZIP (registered trademark) disk, a removable hard disk, a rewritable CD, a rewritable DVD, and a flash memory. It is preferable to use the recording medium as a “key medium recording an ID or the like”.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram exemplifying an area configuration of a recording medium used for executing a method of recording and reproducing specific information on a recording unit having an unused area of the recording medium according to the first embodiment of the present invention. In the present embodiment, a flexible disk (FD), a magneto-optical disk (MO), a ZIP (registered trademark) disk, a removable hard disk, a rewritable CD (CD-RW), a rewritable DVD (DVD-RAM, Use removable recording media such as DVD-RW, DVD + RW, flash memory (SmartMedia (registered trademark), CompactFlash (registered trademark), Memory Stick (registered trademark), SD memory card (registered trademark), multimedia card (registered trademark)). be able to. In the following, a flexible disk (FD) which is a kind of a removable recording medium is used, and information on security such as ID and password and a security management program using the information are stored in the FD (ID key FD). The case will be described as an example.
[0019]
The FD (ID key FD) of the present embodiment shown in FIG. 1 has a management area 1 arranged at the beginning of the entire area (outermost circumference of the disk) and an end of the management area 1 like the normal FD shown in FIG. And a recording area 2 arranged adjacent to the section. In the management area 1, as shown in FIG. 1, medium type information (for example, 2HD) 3, volume ID information (for example, AX1247) 4, file name (for example, TEST.DAT), start sector information, link sector information Various types of management information, including a file storage information recording table (FAT) 5 including byte number information, are recorded. On the other hand, the recording area 2 has a plurality of divided recording units (sectors; 1 sector = 512 bytes), and various information such as data and programs are recorded using at least one recording unit. It has become.
[0020]
First, the FD of the present embodiment is different from a normal FD in that information for medium management as described below is recorded. That is, as shown in FIG. 1, an index (second FAT) 6 is recorded in a predetermined area (a rear area in the illustrated example) of the recording area 2, and a management program (P1) is stored in an area immediately before the second FAT 6. 7, a specific information recording program (P2) 8 and a specific information reproducing program (P3) 9 are recorded in the order shown. The recording positions of the management program 7, the specific information recording program 8, and the specific information reproduction program 9 are not limited to the above, and may be recorded in a predetermined area (for example, a rear area) of the management area 1.
[0021]
Secondly, the FD of the present embodiment, in accordance with the operation of the management program (P1) 7 or the like, stores information for security management as follows in a recording unit having an unused area after the ECB code. This is different from a normal FD in that a security management program using the information is recorded. That is, as shown in FIG. 1, among the plurality of recording units in the recording area 2, recording units 10-1, 10-2, and 10 having unused areas after the ECB code after recording various information such as data and programs. An ID 11, a password (PW) 12, and a security management program (SP) 13 are recorded in the unused areas of −3. The ID 11, the password (PW) 12, and the security management program (SP) 13 include management information (information corresponding to STF, EOF, and ECB) for managing the information itself.
[0022]
Next, a method for creating the ID key FD of the present embodiment will be described.
First, an FD formatted to a predetermined recording capacity (for example, 1440 KB) is prepared. Next, an empty second FAT 6 is recorded at the end of the recording area 2, and then, in the area immediately before the second FAT 6, the management program (P1) 7, the specific information recording program (P2) 8, and the specific information reproduction program ( P3) 9 is recorded in the order shown in FIG. 1, and thereafter, information relating to the management program (P1) 7, the specific information recording program (P2) 8, and the specific information reproduction program (P3) 9 is recorded in the second FAT 6. Since the management program (P1) 7 and the like recorded as described above are normal recordings via the OS, they can be reproduced (read) by a normal reproduction command via the OS.
[0023]
Next, for example, 4-byte dummy information “ABCD” having a file name “TEST.DAT” is recorded at the head of the recording area 2. As a result, information such as a file name as shown is recorded in the FAT 5 of the management area 1. Next, a large number of information such as document files are prepared and sequentially recorded in the recording area 2. Thus, in the recording area 2, recording units 10-1, 10-2, 10-3,... Having an unused area after the ECB code are generated, and information corresponding to the above recording is recorded in the FAT5. Will be. The recording of the information described above is performed by the “issuer of the ID key FD”.
[0024]
Next, a method for actually recording and reproducing information for security management and a security management program using the information in the “ID key FD” created as described above will be described with reference to FIGS. Will be explained.
First, a personal computer (hereinafter, referred to as a PC) using WINDOWS (registered trademark) XP or the like as an operation system (OS) is used as an information recording / reproducing device. "A program for activating the management program (P1) 7 upon detection" is resident. In this state, when the ID key FD shown in FIG. 1 is inserted into the FD drive, the management program (P1) 7 shown in FIG. 2 is started with recognition of the ID key FD.
[0025]
In FIG. 2, first, in step S1, a "recording unit having an unused area after the ECB code" existing in the recording area 2 is searched. Thus, the recording units 10-1, 10-2, 10-3,... Satisfying the search condition are searched. In the next step S2, information (in this case, start sector information) regarding all the recording units having an unused area is recorded in the second FAT6. As described above, the recording units 10-1, 10-2, 10-3,... Having an unused area after the ECB code can be used for recording and reproducing information.
[0026]
In the next step S3, it is determined whether it is the first time (that is, at the time of recording of specific information by the issuer of the ID key FD), and if it is the first time, the process proceeds to step S4, and the second and subsequent times (that is, the user If “use”, the process skips step S4 and proceeds to step S5. In step S4, the specific information recording program (P2) 8 shown in FIG. 3 is started and executed in order to record the information for security management and the security management program using the information, and in step S5, In order to perform security management using the information for security management, the specific information reproduction program (P3) 9 shown in FIG. 4 is activated and executed.
[0027]
In FIG. 3, first, in step S11, a recording unit having an unused area large enough to record the ID 11 is searched. As a result, the recording units 10-1, 10-2, 10-3,... Satisfying the search condition are searched. In the next step S12, a recording unit corresponding to a preset selection condition among recording units satisfying the retrieval condition (when a plurality of recording units are retrieved, the recording unit of the highest address is selected) Is recorded in an unused area after the ECB code of the recording unit 10-1. In the next step S13, information relating to the recording unit 10-1 used for recording (file name, start sector information, byte number information and link sector information when there is a link) is recorded in the second FAT6. In the next step S14, the same processing as in steps S11 to S13 relating to the PW12 and the SP13 is performed, the PW12 is recorded in an unused area after the ECB code of the recording unit 10-2, and the ECB code of the recording unit 10-3 is recorded. SP13 is recorded in an unused area thereafter. The ID 11, PW12, and SP13 are recorded by displaying a "comment requesting input of data such as ID11" between steps S11 and S12, and manually inputting data such as ID11 to the issuer of the ID key FD. Alternatively, a method may be used in which the ID 11, PW 12, and SP 13 are stored in advance in the storage device of the PC, and are automatically read and recorded. Thus, the ID key FD in the state shown in FIG. 1 is created.
[0028]
In this embodiment, the ID 11, the password (PW) 12, and the security management program (SP) 13 are all recorded in the ID key FD. However, only the ID 11 or the password (PW) 12 is recorded in the ID key FD. And the ID 11 and the password (PW) 12 are recorded on the ID key FD, but the security management program (SP) is recorded on the hard disk of the PC. In the third specific information recording program, recording of unnecessary information is omitted.
[0029]
In the specific information reproduction program (P3) 9 of FIG. 4 which is started when it is determined that the current time is the second time or later in step S3 of FIG. 2, first, in step S21, the security management program (SP) 13 is started. In the next step S22, in order to read out the ID11 requested by the security management program (SP) 13, the start sector information of the recording unit in which the ID11 is recorded is acquired by referring to the second FAT6. In the next step S23, the ID 11 is read from the area after the ECB code of the recording unit corresponding to the start sector information. In the next step S24, in order to read out the PW12 requested by the security management program (SP) 13, the address information of the recording unit in which the PW12 is recorded is acquired by referring to the second FAT6. In the next step S25, the PW 12 is read from the area after the ECB code of the recording unit corresponding to the address information.
[0030]
In the next step S26, data input of ID and PW is requested. In this case, it is assumed that the user manually inputs the ID and PW data in response to the data input request. In the next steps S27 and S28, it is determined whether or not the input ID and PW match the read ID and PW12. In the determinations in steps S27 and S28, if both match, the process proceeds to step S29, and a validity determination process such as "permit execution of predetermined program because it is a legitimate medium (or legitimate user)" If at least one of them does not match, an abnormality determination process such as "it is not a legitimate medium (or a legitimate user), and therefore the execution of the predetermined program is not permitted and the process is terminated as it is" is performed.
[0031]
According to the present embodiment, by configuring the recording medium as shown in FIG. 1, it is possible to provide a method of recording and reproducing specific information on a recording unit having an unused area of the recording medium.
Further, according to the present embodiment, when the FD is used as a recording medium and the ID key FD is configured and used, the recording units 10-1, 10-10 having an unused area after the ECB code of the recording area 2 are used. The ID 11, the password (PW) 12, and the security management program (SP) 13 recorded on the PC-2 and 10-3 are invisible under the management of the FAT 5, and are the same as those in FIG. Since an FD cannot be created, extremely high security performance can be obtained.
[0032]
FIG. 5 is a diagram exemplifying an area configuration of a recording medium used for executing a method of recording and reproducing specific information for a recording unit having an unused area of the recording medium according to the second embodiment of the present invention. In the present embodiment, the FD used as the recording medium is configured as the ID key FD as in the first embodiment, but the specific information reproduction program (P3) 9 in the area immediately before the second FAT 6 in the recording area 2 is used. Subsequently, a change to add the specific information transfer recording program (P4) 14 is made, and the management program (P1) 7 is changed as shown in FIG. 6 in accordance with the change.
[0033]
That is, in the management program (P1) 7 of FIG. 6, since step S6 is added after step S4, the process proceeds to step S6 after execution of step S4, and the specific information movement recording program (P4) shown in FIG. ) 8 is started and executed.
[0034]
In FIG. 7, first, in step S31, it is determined whether or not there is a recording command via the OS for a recording unit in which ID 11, PW12, and SP13 are recorded. In this discrimination, if there is no recording command, the self-loop is repeated, so that it is resident in the OS of the PC. On the other hand, if there is a recording command, in the next step S32, an alternative recording unit having an unused area large enough to record the ID 11 is searched. In the next step S33, the ID 11 is moved to an unused area after the ECB code of the alternative recording unit satisfying the search condition and recorded. When a plurality of alternative recording units satisfying the search conditions are found, the recording unit with the highest address is selected.
[0035]
In the next step S34, the same processing as in steps S32 to S33 relating to the PW12 and the SP13 is performed, the PW12 is moved to an unused area after the ECB code of the alternative recording unit that satisfies the search condition, and is recorded. The SP 13 is moved to an unused area after the ECB code of a satisfactory alternative recording unit for recording. In the next step S35, the information file name, start sector information, byte number information, and link sector information when there is a link related to the alternative recording unit used for recording the ID11, PW12, and SP13) are recorded in the second FAT6 and the second FAT6. Deletes information about the recording unit used for recording before moving from.
[0036]
By the way, since the FD of the present embodiment is assumed to be used as an “ID key FD”, it is basically used in such a manner that the free area of the recording area 2 is continuously reduced to zero by recording a document file or the like. Since it is not possible to occur, it is extremely unlikely that it is determined that there is no alternative recording unit in step S32, but if it is determined that there is no alternative recording unit, the process proceeds to step S36, and a “recording impossible warning” is issued. Is issued, and the recording of the recording unit via the OS is stopped (in other words, a command to perform the recording for another recording unit is returned to the OS). In order to make the specific information movement recording program (P4) 8 effective, for example, by overwriting a document file or the like recorded in the recording area 2 at regular intervals, the “ECB after recording various information” It is preferable to frequently change the position of the “recording unit having the unused area after the code and the alternative recording unit”, and this is the case in the present embodiment.
[0037]
According to this embodiment, the same operation and effect as those of the first embodiment can be obtained, and information recording via the operation system for a recording unit (or an alternative recording unit) used for recording the ID 11, the PW 12, and the SP 13 is performed. Since the position of the recording unit for recording the ID 11, PW12, and SP13 frequently changes according to (overwrite recording), the effect of improving security is obtained.
[Brief description of the drawings]
FIG. 1 is a diagram exemplifying an area configuration of a recording medium used for executing a method of recording and reproducing specific information with respect to a recording unit having an unused area of a recording medium according to a first embodiment of the present invention.
FIG. 2 is a diagram exemplifying a management program to be recorded in a recording area when the recording medium of the first embodiment is an ID key FD.
FIG. 3 is a diagram exemplifying a specific information recording program to be recorded in a recording area when the recording medium of the first embodiment is an ID key FD.
FIG. 4 is a diagram exemplifying a specific information reproduction program to be recorded in a recording area when the recording medium of the first embodiment is an ID key FD.
FIG. 5 is a diagram exemplifying an area configuration of a recording medium used for executing a method of recording and reproducing specific information for a recording unit having an unused area of a recording medium according to a second embodiment of the present invention.
FIG. 6 is a diagram exemplifying a management program to be recorded in a recording area when an ID key FD is used as a recording medium according to the second embodiment.
FIG. 7 is a diagram exemplifying a specific information movement recording program to be recorded in a recording area when the recording medium of the second embodiment is an ID key FD.
FIG. 8 is a diagram for explaining an area configuration of a conventional flexible disk (FD).
9A is a diagram showing a configuration of a recording unit of a conventional flexible disk (FD), FIG. 9B is a diagram showing a state where information is recorded in the entire recording area of the recording unit, and FIG. FIG. 4C is a diagram illustrating a state in which an unused area is generated as a result of recording information in a recording area of a recording unit.
[Explanation of symbols]
1 management area
2 Recording area
3 medium type information
4 Volume ID information
5 File storage information record table (FAT)
6 Index (2nd FAT)
7 Management program (P1)
8 Specific information recording program (P2)
9 Specific information reproduction program (P3)
10-1, 10-2, 10-3,... Recording unit having unused area after ECB code
11 ID
12 Password (PW)
13 Security Management Program (SP)
14. Specific information transfer recording program (P4)

Claims (8)

A recording medium that can be used in an information recording / reproducing device such as a personal computer, which is disposed at the head of the entire area and in which management information including a file storage information recording table is recorded, and a terminal part of the management area. And a recording area provided with a recording area in which various information such as data and programs are recorded using at least one of a plurality of divided recording units. When recording and reproducing specific information for a recording unit having an unused area after the ECB code,
A first step of retrieving a recording unit having an unused area after an ECB code after the recording of the various information, which is started upon recognition of the recording medium after the operation system of the information recording / reproducing apparatus is started; A management step comprising: creating an index for all of the recording units having the information and recording the index at a predetermined position in the recording area;
A third step of searching for a recording unit having an unused area large enough to record the specific information, which is started when the recording instruction of the specific information is issued, and searching for a recording unit after the ECB code of the recording unit satisfying the search condition. A specific information recording step including: a fourth step of recording the specific information in a use area; and a fifth step of recording information related to a recording unit used for the recording in the index.
A sixth step of starting when the reproduction instruction of the specific information is issued and obtaining information relating to a recording unit in which the specific information is recorded with reference to the index, and an area after the ECB code of the recording unit corresponding to the obtained information; A specific information reproducing step comprising: a seventh step of reading the specific information from
Wherein the information recording / reproducing apparatus executes the method. An eighth step of detecting presence / absence of a recording command via the operation system for a recording unit in which the specific information is recorded, resident in an operation system of the information recording / reproducing apparatus after recognition of the recording medium; A ninth step of searching for an alternative recording unit having an unused area large enough to record the specific information upon detection, and setting the specific information in an unused area after the ECB code of the alternative recording unit satisfying the search condition. A tenth step of moving and recording, and an eleventh step of recording information on the alternative recording unit used for the recording in the index and deleting information on the recording unit used in the recording in the fifth step from the index. 2. The non-use of a recording medium according to claim 1, wherein the information recording / reproducing apparatus executes a specific information transfer recording step comprising: Method of recording reproducing specific information to the recording unit having a pass. 2. The recording unit having an unused area of the recording medium according to claim 1, wherein the management step, the specific information recording step, and the specific information reproducing step are performed by a program pre-installed in the recording medium. Recording and reproducing specific information. 3. The unused area of a recording medium according to claim 2, wherein the management step, the specific information recording step, the specific information reproducing step, and the specific information moving recording step are executed by a program pre-installed in the recording medium. Recording and reproducing specific information for a recording unit having 5. The recording apparatus according to claim 1, wherein the specific information is information relating to security, such as ID information and password information. How to record and play back information. The unused area of a recording medium according to any one of claims 1 to 4, wherein the specific information is information on security such as ID information and password information and a security management program using the information. Recording and reproducing specific information for a recording unit having 7. The recording apparatus according to claim 1, wherein the specific information includes management information for managing the information itself. How to record and play back information. 8. The recording medium according to claim 1, wherein the recording medium is a removable recording medium such as a flexible disk, a magneto-optical disk, a ZIP (registered trademark) disk, a removable hard disk, a rewritable CD, a rewritable DVD, and a flash memory. A method for recording and reproducing specific information on a recording unit having an unused area of the recording medium according to any one of the above.

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