CN102541744B - A kind of partition method of movable storage device and system - Google Patents
A kind of partition method of movable storage device and system Download PDFInfo
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- CN102541744B CN102541744B CN201010605989.0A CN201010605989A CN102541744B CN 102541744 B CN102541744 B CN 102541744B CN 201010605989 A CN201010605989 A CN 201010605989A CN 102541744 B CN102541744 B CN 102541744B
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000005192 partition Methods 0.000 title claims abstract description 20
- 238000013316 zoning Methods 0.000 claims description 10
- 230000006870 function Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
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Abstract
The invention discloses a kind of partition method and system of movable storage device, described method comprises: when determining the division operation needing to carry out movable storage device, determines type and the memory space requirements information of division operation; When determining that the remaining space of movable storage device meets the space requirement of described space requirement information instruction, carry out the division operation of the type instruction of division operation according to described space requirement information.Described method and system when not formaing, can realize the subregion for movable storage device.
Description
Technical field
The present invention relates to partitioning technique, particularly relate to a kind of partition method and system of movable storage device.
Background technology
Along with the application of SD card is more and more extensive, capacity is increasing, and increasing client uses SD card to apply as main medium.
At present, SD card, as storage medium, is widely used in various consumption electronic product, such as mobile phone, USB flash disk, e-book, MP3 etc., but due to its function singleness, only exists as a user disk.When the capacity of SD card is increasing, client is just had to need from SD card, to mark segment space to realize some special requirements.
More existingly can carry out partitioning tool to SD card, such as DiskGenius.exe, can realize sectoring function, set up partition table, but need after subregion to reformat could apply SD card, cause the loss of user data, practicality is poor.
Summary of the invention
In view of this, the technical problem to be solved in the present invention is, provides a kind of partition method and system of movable storage device, when not formaing, can realize the subregion for movable storage device.
For this reason, the embodiment of the present invention adopts following technical scheme:
The embodiment of the present invention provides a kind of partition method of movable storage device, comprising:
When determining the division operation needing to carry out movable storage device, determine type and the memory space requirements information of division operation;
When determining that the remaining space of movable storage device meets the space requirement of described space requirement information instruction, carry out the division operation of the type instruction of division operation according to described space requirement information.
Wherein, described memory space requirements information comprises: require that storage space is the size of continuous space and required storage space; Accordingly, described determine the remaining space of movable storage device meet described memory space requirements information instruction memory space requirements comprise:
Determine that the size of the continuous space in the remaining space of movable storage device is not less than the size of described required storage space.
The division operation carrying out the type instruction of division operation according to described space requirement information comprises:
From the continuous space described remaining space, determine the storage space of described required storage size, the storage space determined carries out division operation according to the type of described division operation.
Described memory space requirements information comprises: the size of required storage space; Accordingly, described determine the remaining space of movable storage device meet described memory space requirements information instruction memory space requirements comprise:
Determine that the size of the remaining space of movable storage device is not less than the size of described required storage space.
The division operation carrying out the type instruction of division operation according to described space requirement information comprises:
In the remaining space of movable storage device, determine the storage space of described required storage size, the storage space determined carries out division operation according to the type of described division operation.
Described division operation comprises:
Store the address information of the storage space determined, and, upgrade the MBR of movable storage device.
Also comprise after determining the type of division operation and memory space requirements information:
When judging there is not MBR in movable storage device and there is reserved area between DBR and FAT, storage space shared by DBR is moved the storage space of default size to side, reserved area, in amendment DBR, the size of reserved area, the storage space vacated after DBR moves creates MBR.
The embodiment of the present invention also provides a kind of partition system of movable storage device, comprising:
Determining unit, during for determining the division operation needing to carry out movable storage device, determines type and the memory space requirements information of division operation;
Zoning unit, during for determining that the remaining space of movable storage device meets the space requirement of described space requirement information instruction, carries out the division operation of the type instruction of division operation according to described space requirement information.
Wherein, described memory space requirements information comprises: require that storage space is the size of continuous space and required storage space; Accordingly, zoning unit comprises:
First determines subelement, for determining that the size of the continuous space in the remaining space of movable storage device is not less than the size of described required storage space;
First subregion subelement, for determining the storage space of described required storage size from the continuous space in described remaining space, the storage space determined carries out division operation according to the type of described division operation.
Described memory space requirements information comprises: the size of required storage space; Accordingly, zoning unit comprises:
Second determines subelement, and the size for the remaining space determining movable storage device is not less than the size of described required storage space;
Second subregion subelement, for determining the storage space of described required storage size in the remaining space of movable storage device, the storage space determined carries out division operation according to the type of described division operation.
Technique effect for technique scheme is analyzed as follows:
When determining that the remaining space of movable storage device meets the space requirement of described space requirement information instruction, the division operation of the type instruction of division operation is carried out according to described space requirement information, do not need the format carrying out movable storage device, thus when remaining the legacy data in movable storage device, complete division operation.
Accompanying drawing explanation
Fig. 1 is the partition method schematic flow sheet of a kind of movable storage device of the embodiment of the present invention;
Fig. 2 is the partition method schematic flow sheet of the another kind of movable storage device of the embodiment of the present invention;
Fig. 3 is the partition system schematic flow sheet of a kind of movable storage device of the embodiment of the present invention.
Embodiment
Below, the partition method of embodiment of the present invention movable storage device and the realization of system is described with reference to the accompanying drawings.
As shown in Figure 1, be the partition method schematic flow sheet of a kind of movable storage device of the embodiment of the present invention, the method comprises:
Step 101: when determining the division operation needing to carry out movable storage device, determines type and the memory space requirements information of division operation;
Step 102: when determining that the remaining space of movable storage device meets the space requirement of described space requirement information instruction, carries out the division operation of the type instruction of division operation according to described space requirement information.
In partition method shown in Fig. 1, when determining that the remaining space of movable storage device meets the space requirement of described space requirement information instruction, the division operation of the type instruction of division operation is carried out according to described space requirement information, do not need the format carrying out movable storage device, thus when remaining the legacy data in movable storage device, complete division operation.
Wherein, the described movable storage device in Fig. 1 can be SD card etc.On the basis of Fig. 1, by Fig. 2, the partition method of embodiment of the present invention movable storage device is described in more detail.In fig. 2, take movable storage device as SD card be example, as shown in Figure 2, the method comprises:
Step 201: initialization SD card;
Here initialization SD card refers to: start SD card, realizes the function such as normal read-write for SD card.
Wherein, general, SD card comprises Main Boot Record (MBR), system boot record (DBR), file allocation table (FAT), File Directory Table (FDT), block of information, part such as data (DATA) district, reserved area etc., wherein, each subregion (also can be called user disk) comprising: FAT, DBR, FDT, DATA district.
Step 202: when determining the division operation needing to carry out SD card, determines type and the memory space requirements information of division operation;
Wherein, the type of described division operation can comprise: set up and hide dish, or, make data exchange zone, or, make the file data district of set form.
According to the difference of division operation type, described memory space requirements information can be different, general, when the type of described division operation is hidden dish for setting up or makes data exchange zone, described memory space requirements information can comprise: require that storage space is the size of continuous space and required storage space.
And when the type of division operation is: when making the file data district of set form, described memory space requirements information can comprise: the size of required storage space.
That is, when setting up hiding dish or make data exchange zone, generally need a slice continuous print storage space, and when making the file data district of set form, then can be discontinuous storage space.
General, comprise FAT table at SD card, FAT table general by bunch in units of, and bunch in units of sector; Whether occupied and idle bunch whether continuous of each bunch in SD card can be obtained by analyzing FAT table.
Step 203: judge whether there is MBR in SD card, if existed, performs step 206; Otherwise, perform step 204.
Wherein, if when there is MBR in SD card, whether there is the same subregion made before can also first obtaining from the block of information of SD card, if existed, empty the storage space of this subregion, perform step 206 more afterwards, to save storage space.
Step 204: judge whether there is reserved area between DBR and FAT, if existed, performs step 205; Otherwise prompting user needs to destroy data just can carry out subregion.
Step 205: the storage space storage space shared by DBR being moved default size to side, reserved area, in amendment DBR, the size of reserved area, the storage space vacated after DBR moves creates MBR; Perform step 206.
General, the space shared by MBR is less, a general only needs sector.
Step 206: determine whether the remaining space of SD card meets the space requirement of described space requirement information instruction, if so, performs step 206; Otherwise prompting user needs to destroy data just can carry out subregion.
Wherein, according to the difference of space requirement information, the described determining step in this step is slightly different:
Described memory space requirements information comprises: when requiring that storage space is the size of continuous space and required storage space, and the memory space requirements whether remaining space of the described SD of determination card meets the instruction of described memory space requirements information comprises:
Determine whether the size of the continuous space in the remaining space of SD card is not less than the size of described required storage space.
And when described memory space requirements information comprises: during the size of required storage space, the memory space requirements that the remaining space of the described SD of determination card meets the instruction of described memory space requirements information comprises:
Determine that the size of the remaining space of SD card is not less than the size of described required storage space.
Wherein, known according to the description about FAT table in step 202, the remaining space of SD card can be obtained in this step by the FAT table analyzing SD card, and whether continuous between remaining space, specifically how to analyze and repeat no more here.
Step 207: the division operation carrying out the type instruction of division operation according to described space requirement information.
Similar to step 206, when memory space requirements information is different, the realization of this step is also different, and wherein, described memory space requirements information comprises: when requiring that storage space is the size of continuous space and required storage space, this step comprises:
From the continuous space described remaining space, determine the storage space of described required storage size, the storage space determined carries out division operation according to the type of described division operation.
When described memory space requirements information comprises: during the size of required storage space, this step comprises:
In the remaining space of SD card, determine the storage space of described required storage size, the storage space determined carries out division operation according to the type of described division operation.
Wherein, described division operation comprises:
Store the address information of the storage space determined, and, upgrade the MBR of SD card.
The address information in other FAT districts, File Directory Table (FDT) and data (DATA) district remains unchanged.
General, SD card comprises block of information, can be stored in block of information by the address information of the storage space determined, the structure of described block of information can be generally:
typedefstructNandBinInfo
{
T_U32data_length; The number of // sector
T_U32ld_addr; The beginning of // sector
T_BOOLbBackup；
T_U8file_name[16]；
}T_BIN_INFO；
The address information hiding dish, data exchange zone or file data district can be preserved with above-mentioned T_BIN_INFO structure form in block of information.
Address information for the file data district of set form: because storage space can be discontinuous, so can when the address information in store file data district, increase a certain size the address chain as 8k size, it is one group with 8 bytes, often the spatial sector of group preservation continuation address starts and sector number, and form can be as shown in table 1 below:
Table 1
Corresponding with the partition method of above movable storage device, the embodiment of the present invention also provides a kind of partition system of movable storage device, and as shown in Figure 3, this system comprises:
Determining unit 310, during for determining the division operation needing to carry out movable storage device, determines type and the memory space requirements information of division operation;
Zoning unit 320, during for determining that the remaining space of movable storage device meets the space requirement of described space requirement information instruction, carries out the division operation of the type instruction of division operation according to described space requirement information.
Preferably, as shown in Figure 3, can also comprise:
Set up unit 330, during for judging there is not MBR in movable storage device and there is reserved area between DBR and FAT, storage space shared by DBR is moved the storage space of default size to side, reserved area, in amendment DBR, the size of reserved area, the storage space vacated after DBR moves creates MBR.
Wherein, described memory space requirements information can comprise: require that storage space is the size of continuous space and required storage space; Accordingly, zoning unit 320 can comprise:
First determines subelement, for determining that the size of the continuous space in the remaining space of movable storage device is not less than the size of described required storage space;
First subregion subelement, for determining the storage space of described required storage size from the continuous space in described remaining space, the storage space determined carries out division operation according to the type of described division operation.
Or described memory space requirements information can comprise: the size of required storage space; Accordingly, zoning unit can comprise:
Second determines subelement, and the size for the remaining space determining movable storage device is not less than the size of described required storage space;
Second subregion subelement, for determining the storage space of described required storage size in the remaining space of movable storage device, the storage space determined carries out division operation according to the type of described division operation.
In the partition system of the embodiment of the present invention movable storage device shown in Fig. 3, when determining the division operation needing to carry out movable storage device, the type of determining unit determination division operation and memory space requirements information; When the remaining space of zoning unit determination movable storage device meets the space requirement of described space requirement information instruction, the division operation of the type instruction of division operation is carried out according to described space requirement information, do not need the format carrying out movable storage device, thus when remaining the legacy data in movable storage device, complete division operation.
One of ordinary skill in the art will appreciate that, the process realizing the method for above-described embodiment can have been come by the hardware that programmed instruction is relevant, described program can be stored in read/write memory medium, and this program performs the corresponding step in said method when performing.Described storage medium can be as: ROM/RAM, magnetic disc, CD etc.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a partition method for movable storage device, is characterized in that, comprising:
When determining the division operation needing to carry out movable storage device, determine type and the memory space requirements information of division operation;
When judging that movable storage device exists MBR, whether there is the same subregion made before obtaining from the block of information of movable storage device, if existed, empty the storage space of this subregion; When judging there is not MBR in movable storage device and there is reserved area between DBR and FAT, storage space shared by DBR is moved the storage space of default size to side, reserved area, in amendment DBR, the size of reserved area, the storage space vacated after DBR moves creates MBR;
When determining that the remaining space of movable storage device meets the space requirement of described space requirement information instruction, the division operation of the type instruction of division operation is carried out according to described space requirement information, the described space requirement determining that the remaining space of movable storage device meets the instruction of described space requirement information comprises: whether the FAT table analyzing described movable storage device obtains the remaining space of described movable storage device, and continuous between remaining space.
2. method according to claim 1, is characterized in that, described memory space requirements information comprises: require that storage space is the size of continuous space and required storage space; Accordingly, described determine the remaining space of movable storage device meet described memory space requirements information instruction memory space requirements comprise:
Determine that the size of the continuous space in the remaining space of movable storage device is not less than the size of described required storage space.
3. method according to claim 2, is characterized in that, the division operation carrying out the type instruction of division operation according to described space requirement information comprises:
From the continuous space described remaining space, determine the storage space of described required storage size, the storage space determined carries out division operation according to the type of described division operation.
4. method according to claim 1, is characterized in that, described memory space requirements information comprises: the size of required storage space; Accordingly, described determine the remaining space of movable storage device meet described memory space requirements information instruction memory space requirements comprise:
Determine that the size of the remaining space of movable storage device is not less than the size of described required storage space.
5. method according to claim 4, is characterized in that, the division operation carrying out the type instruction of division operation according to described space requirement information comprises:
In the remaining space of movable storage device, determine the storage space of described required storage size, the storage space determined carries out division operation according to the type of described division operation.
6. the method according to any one of claim 1 to 5, is characterized in that, described division operation comprises:
Store the address information of the storage space determined, and, upgrade the MBR of movable storage device.
7. a partition system for movable storage device, is characterized in that, comprising:
Determining unit, during for determining the division operation needing to carry out movable storage device, determines type and the memory space requirements information of division operation;
Set up unit, for when judging there is not MBR in movable storage device and there is reserved area between DBR and FAT, storage space shared by DBR is moved the storage space of default size to side, reserved area, in amendment DBR, the size of reserved area, the storage space vacated after DBR moves creates MBR;
Whether judging unit, for when judging that movable storage device exists MBR, existing the same subregion made before obtaining, if existed, empty the unit of the storage space of this subregion from the block of information of movable storage device;
Zoning unit, for when determining that the remaining space of movable storage device meets the space requirement of described space requirement information instruction, the division operation of the type instruction of division operation is carried out according to described space requirement information, the described space requirement determining that the remaining space of movable storage device meets the instruction of described space requirement information comprises: whether the FAT table analyzing described movable storage device obtains the remaining space of described movable storage device, and continuous between remaining space.
8. system according to claim 7, is characterized in that, described memory space requirements information comprises: require that storage space is the size of continuous space and required storage space; Accordingly, zoning unit comprises:
First determines subelement, for determining that the size of the continuous space in the remaining space of movable storage device is not less than the size of described required storage space;
First subregion subelement, for determining the storage space of described required storage size from the continuous space in described remaining space, the storage space determined carries out division operation according to the type of described division operation.
9. system according to claim 7, is characterized in that, described memory space requirements information comprises: the size of required storage space; Accordingly, zoning unit comprises:
Second determines subelement, and the size for the remaining space determining movable storage device is not less than the size of described required storage space;
Second subregion subelement, for determining the storage space of described required storage size in the remaining space of movable storage device, the storage space determined carries out division operation according to the type of described division operation.
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| CN105701162B (en) * | 2015-12-30 | 2020-03-31 | 青岛海信移动通信技术股份有限公司 | Management method for user data partition of intelligent terminal and intelligent terminal |
| CN106844228B (en) * | 2017-01-20 | 2020-01-07 | 深圳英飞拓科技股份有限公司 | Method and device for realizing partition management of lightweight SD card |
| CN113473195A (en) * | 2021-05-31 | 2021-10-01 | 青岛海尔科技有限公司 | Multimedia data storage method and system, storage medium and electronic device |
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| CN101213510A (en) * | 2005-06-29 | 2008-07-02 | 桑迪士克股份有限公司 | Method and system for managing partitions in a storage device |
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| CN101213510A (en) * | 2005-06-29 | 2008-07-02 | 桑迪士克股份有限公司 | Method and system for managing partitions in a storage device |
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| "硬盘分区魔术师图解教程";nice15145032;《http://wenku.baidu.com/view/2fffeb1ffc4ffe473368ab91.html》;20100701;1-9 * |
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