CN105760473A - Recovery method and device used after exFAT file formatting - Google Patents
Recovery method and device used after exFAT file formatting Download PDFInfo
- Publication number
- CN105760473A CN105760473A CN201610084445.1A CN201610084445A CN105760473A CN 105760473 A CN105760473 A CN 105760473A CN 201610084445 A CN201610084445 A CN 201610084445A CN 105760473 A CN105760473 A CN 105760473A
- Authority
- CN
- China
- Prior art keywords
- file
- sector
- currents
- sector number
- folder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/14—Error detection or correction of the data by redundancy in operation
- G06F11/1402—Saving, restoring, recovering or retrying
- G06F11/1415—Saving, restoring, recovering or retrying at system level
- G06F11/1435—Saving, restoring, recovering or retrying at system level using file system or storage system metadata
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/10—File systems; File servers
- G06F16/18—File system types
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Library & Information Science (AREA)
- Quality & Reliability (AREA)
- Data Mining & Analysis (AREA)
- Databases & Information Systems (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
Abstract
The invention belongs to the field of computers and particularly relates to a recovery method and device used after exFAT file formatting. According to the method, a cluster start sector number is calculated by obtaining a start sector number of a first-level folder and start cluster numbers of folder bodies included in the first-level folder. The cluster start sector number and cluster size serve as recovery parameters, and accuracy of recovery results is guaranteed to the largest extent. The method and device improve accuracy of the recovery results, greatly improve the recovery effect, and are important improvement of exFAT lost data recovery.
Description
Technical field
The invention belongs to computer realm, be specifically related to restoration methods and device after a kind of exFAT document formatting.
Background technology
ExFAT, as the file system that FAT is extended, is a kind of file system being extremely suitable for use on flash memory, is widely used in above mobile memory medium.ExFAT loses the recovery of data and is always up an emphasis of concern inside information security field.The reason of exFAT loss of data can be largely classified into two kinds, and the first is deleted by mistake or malice is deleted, and the second is formatted or malice formatting by mistake.For the first situation, existing recovery technology is highly developed, it is possible to reach good recovery effects.For the second situation, existing recovery technology adopts the parameter in the middle of some parameters after formatting in data recovery procedure, there is the recovery inaccurate situation of data.
The initial sector calculation of file content is as follows:
FileDataStartSector=ClusterStartSector+FileDataStartClus er*CluserSize/SectorSize
Wherein, the initial sector of FileDataStartSector representation file content, ClusterStartSector represents a bunch start sector number, and FileDataStartCluser represents the starting cluster number of file content, and CluserSize represents a bunch size.Additionally, ClusterStartSector and CluserSize can be subject to the impact of partition format, FileDataStartCluser records in file record, and the sector-size that SectorSize is disk is generally 512 bytes
The existing method that data after exFat partition format are recovered: the first adopts the DBR to DBR and backup to repair, realizes data and recovers.But the technical difficulty that this method realizes is big.If the DBR of DBR and backup not being modified, being necessary for realizing data by loaded down with trivial details calculating and recovering.Not only cost is high, and inefficiency.
The second be exFAT file system formatted time, in most cases simply redistributed the relevant area information of file system and structural information, the file record information before formatting generally also can remain in disk.Therefore, the data before formatting can just be recovered by totally searching for the file record information of residual.Referenced patent document CN102254048B discloses the method and system that a kind of data are recovered, after exFAT subregion is formatted, the file needing to recover scanned by calculating sector number corresponding to No. 2 bunches to demarcate, then passes through disk read operation and is recovered by file data from exFAT subregion.
Existing exFAT form recovery technology adopts bunch start sector number of subregion after formatting and bunch size to format the parameter recovered as exFAT, but owing to bunch size after formatting and two parameters of bunch start sector number have been likely occurred change, and in recovery process, the location recovering file content is again relied on these parameters, so the parameter after directly adopting formatting carries out recovery and there will be the inaccurate problem of restoration result.Although the attribute informations such as file name/size can be recovered, but the file content recovered is wrong.
Summary of the invention
For the weak point that prior art exists, the present invention proposes one and proposes restoration methods and device after a kind of exFAT document formatting.The starting cluster number of the file that the method is included by the start sector number and this first grade file folder obtaining first grade file folder, calculates a bunch start sector number.With bunch start sector number with bunch be sized to recover parameter, ensure that the accuracy of restoration result to the full extent.
The present invention adopts the following technical scheme that
Restoration methods after a kind of exFAT document formatting, it comprises the following steps,
S1, after resolving formatting, subregion rolls up header, obtains bunch start sector number CSS1, bunch size CS, sector-size SSize；
S2, all starting cluster list DC={DC of the file that the start sector number DS of acquisition first grade file folder correspondence and this first grade file folder include1, DC2, DC3..., DCn, n is the All Files folder sum that first grade file folder includes；
S3, obtains bunch start sector number CSS2 by bunch start sector number computing rule；
S4, it is judged that whether CSS1 is be more than or equal to CSS2, and if so, then bunch start sector number CSS=CSS1, if it is not, then bunch start sector number CSS=CSS2；
S5, scans all of file and folder information, haptophore start sector number CSS, bunch size CS, by disk read operation, recovers file from formatted exFat subregion.
Further, step S2 includes step in detail below,
S101, after resolving formatting, subregion rolls up header, obtains total sector number TotalS of subregion, initializes current sector number CurrentS=0；
S102, it is judged that CurrentS TotalS, if it is, terminate, if it is not, then forward step S103 to；
S103, reads the data of CurrentS sector, and judges that whether this sector is the sector of first grade file folder according to folder data judging rules, if it is, forward step S104 to, if it is not, then forward step S102 after CurrentS=CurrentS+1 to；
S104, DS=CurrentS, start down to resolve corresponding file or folder information until running into the directory entry not meeting architectural feature and just stopping according to the structure of exFAT file directory item from CurrentS always, the sector number of this sector is ValidS, is resolved to file i by corresponding starting cluster DCiIt is deposited in list DC, i=1,2,3 ..., n；
S105, it is judged that n 1, if it is, terminate, otherwise forwards step S106 to；
S106, it is judged that whether CurrentS is equal to ValidS, if it is, forward step S102 after CurrentS=CurrentS+1 to, if it is not, then forward step S102 after CurrentS=ValidS to.
Further, step S103 file folder data judging rules is:
Condition one: the 1st byte of sector is 0x85 and the 16th byte is 0xC0 and the 32nd byte is 0xC1；
Condition two: the 1st byte of sector is 0x05 and the 16th byte is 0x40 and the 32nd byte is 0x41；
When the data of this sector meet any one in two above condition, then this sector is the sector of file, is not otherwise the sector of file.
Further, in step S3, a bunch start sector number computing rule is:
Element DC in starting cluster list DCiRepresent that same first grade file presss from both sides with DS, therefore computing formula be:
CSSSi=DS-DCi*CS/SSize,
Recovery device after a kind of exFAT document formatting, it includes,
Resolution unit, is used for resolving formatting subregion volume header, obtains bunch start sector number CSS1, bunch size CS, sector-size SSize and total sector number TotalS；
Acquiring unit, all starting cluster list DC={DC of the file that the start sector number DS and this first grade file folder for obtaining first grade file folder correspondence includes1, DC2, DC3..., DCn, n is the All Files folder sum that first grade file folder includes, and obtains bunch start sector number CSS2 by bunch start sector number computing rule, judge that whether CSS1 is be more than or equal to CSS2, if so, then bunch start sector number CSS=CSS1, if it is not, then bunch start sector number CSS=CSS2；
Scanning element, is used for scanning all of file and folder information,
Recovery unit, for haptophore start sector number CSS, bunch size CS, by disk read operation, recovers file from formatted exFat subregion.
Further, acquiring unit obtains start sector number DS corresponding to first grade file folder and all starting cluster list DC of file that this first grade file folder includes specifically includes following steps:
S101, after resolving formatting, subregion rolls up header, obtains total sector number TotalS of subregion, initializes current sector number CurrentS=0；
S102, it is judged that CurrentS TotalS, if it is, terminate, if it is not, then forward step S103 to；
S103, reads the data of CurrentS sector, and judges that whether this sector is the sector of first grade file folder according to folder data judging rules, if it is, forward step S104 to, if it is not, then forward step S102 after CurrentS=CurrentS+1 to；
S104, DS=CurrentS, start down to resolve corresponding file or folder information until running into the directory entry not meeting architectural feature and just stopping according to the structure of exFAT file directory item from CurrentS always, the sector number of this sector is ValidS, is resolved to file i by corresponding starting cluster DCiIt is deposited in list DC, i=1,2,3 ..., n；
S105, it is judged that n 1, if it is, terminate, otherwise forwards step S106 to；
S106, it is judged that whether CurrentS is equal to ValidS, if it is, forward step S102 after CurrentS=CurrentS+1 to, if it is not, then forward step S102 after CurrentS=ValidS to.
Further, step S103 file folder data judging rules is:
Condition one: the 1st byte of sector is 0x85 and the 16th byte is 0xC0 and the 32nd byte is 0xC1；
Condition two: the 1st byte of sector is 0x05 and the 16th byte is 0x40 and the 32nd byte is 0x41；
When the data of this sector meet any one in two above condition, then this sector is the sector of file, is not otherwise the sector of file.
Further, in acquiring unit, a bunch start sector number computing rule is:
Element DC in starting cluster list DCiRepresent that same first grade file presss from both sides with DS, therefore computing formula be:
CSSSi=DS-DCi*CS/SSize,
The file content formatting recovery technology recovery relative to existing exFAT is often made mistakes; the present invention has the following advantages; the present invention not only increases the accuracy of restoration result, and substantially increases recovery effects, is that exFAT is lost the great improvement that data are recovered.
Accompanying drawing explanation
Fig. 1 is the flow chart of restoration methods after exFAT document formatting；
Fig. 2 is the flow chart obtaining start sector number and starting cluster list.
Detailed description of the invention
For further illustrating each embodiment, the present invention is provided with accompanying drawing.These accompanying drawings are the part that the invention discloses content, and it is mainly in order to illustrate embodiment, and the associated description of description can be coordinated to explain the operation principles of embodiment.Coordinating with reference to these contents, those of ordinary skill in the art will be understood that other possible embodiments and advantages of the present invention.Assembly in figure is not necessarily to scale, and similar element numbers is conventionally used to indicate similar assembly.
In conjunction with the drawings and specific embodiments, the present invention is further described.
Consulting shown in Fig. 1, for the flow chart of restoration methods after exFAT document formatting, the method comprises the following steps:
S1, after resolving formatting, subregion rolls up header, obtains bunch start sector number CSS1, bunch size CS, sector-size SSize.After exFAT file system is formatted, resolve the volume header of subregion after formatting, it is possible to obtain bunch start sector number CSS1, bunch size CS, sector-size SSize.
S2, all starting cluster list DC={DC of the file that the start sector number DS of acquisition first grade file folder correspondence and this first grade file folder include1, DC2, DC3..., DCn, n is the All Files folder sum that first grade file folder includes.DCiFor the starting cluster number of file i, p=1,2,3 ..., n.DCiIt is integer numerical value.
Consult shown in Fig. 2, for obtaining the flow chart of start sector number and starting cluster list.It includes step in detail below:
S101, after resolving formatting, subregion rolls up header, obtains total sector number TotalS of subregion, initializes current sector number CurrentS=0.
S102, it is judged that CurrentS TotalS, if it is, resolved all sectors, then terminates, if it is not, then forward step S103 to.
S103, reads the data of CurrentS sector, and judges that whether this sector is the sector of first grade file folder according to folder data judging rules, if it is, forward step S104 to, if it is not, then forward step S102 after CurrentS=CurrentS+1 to.
Wherein, folder data judging rules is:
Condition one: the 1st byte of sector is 0x85 and the 16th byte is 0xC0 and the 32nd byte is 0xC1；
Condition two: the 1st byte of sector is 0x05 and the 16th byte is 0x40 and the 32nd byte is 0x41；
When the data of this sector meet any one in two above condition, then this sector is the sector of file, is not otherwise the sector of file.
S104, DS=CurrentS, start down to resolve corresponding file or folder information until running into the directory entry not meeting architectural feature and just stopping according to the structure of exFAT file directory item from CurrentS always, the sector number of this sector is ValidS, is resolved to file i by corresponding starting cluster DCiIt is deposited in list DC, i=1,2,3 ..., n.
File A includes file txt1, file txt2 and file B, then CurrentS is the start sector number of file A, down resolve from this initial sector always, obtain the information of file txt1, file txt2 and file B, by the starting cluster DC of the file B of acquisitioniIt is deposited in list DC.
S105, it is judged that n 1, has at least a file if it is, obtained in first grade file folder, and obtains the starting cluster number of file, then terminate to resolve, otherwise forward step S106 to.
S106, it is judged that whether CurrentS is equal to ValidS, if it is, forward step S102 after CurrentS=CurrentS+1 to, if it is not, then forward step S102 after CurrentS=ValidS to.
If front portion is divided into first grade file folder information in sector 0, or not then CurrentS=0, ValidS=0, CurrentS are equal to ValidS, then forward step S102 to after CurrentS=CurrentS+1 in rear section.If at sector CurrentS=0, till being resolved to ValidS=5, namely the 0th sector is this first grade file folder information to the 4th sector, then CurrentS is not equal to ValidS, CurrentS=5.
S3, obtains bunch start sector number CSS2 by bunch start sector number computing rule.Bunch start sector number computing rule is,
Element DC in starting cluster list DCiRepresent that same first grade file presss from both sides with DS, therefore computing formula be:
CSSSi=DS-DCi*CS/SSize,
Wherein, bunch start sector number CSSSi, i=1,2,3 ..., n.
There are how many files in first grade file folder, namely have how many element DCi, the element number in starting cluster list DC is identical with the CSSS quantity calculated, and is taken out maximum and is assigned to CSS2.
S4, it is judged that whether CSS1 is be more than or equal to CSS2, and if so, then bunch start sector number CSS=CSS1, if it is not, then bunch start sector number CSS=CSS2.
S5, scans all of file and folder information, haptophore start sector number CSS, bunch size CS, by disk read operation, recovers file from formatted exFat subregion.
The invention allows for recovery device after a kind of exFAT document formatting, it includes,
Resolution unit, is used for resolving formatting subregion volume header, obtains bunch start sector number CSS1, bunch size CS, sector-size SSize and total sector number TotalS；
Acquiring unit, all starting cluster list DC={DC of the file that the start sector number DS and this first grade file folder for obtaining first grade file folder correspondence includes1, DC2, DC3..., DCn, n is the All Files folder sum that first grade file folder includes, and obtains bunch start sector number CSS2 by bunch start sector number computing rule, judge that whether CSS1 is be more than or equal to CSS2, if so, then bunch start sector number CSS=CSS1, if it is not, then bunch start sector number CSS=CSS2；
Scanning element, is used for scanning all of file and folder information,
Recovery unit, for haptophore start sector number CSS, bunch size CS, by disk read operation, recovers file from formatted exFat subregion.
Further, acquiring unit obtains start sector number DS corresponding to first grade file folder and all starting cluster list DC of file that this first grade file folder includes specifically includes following steps:
S101, after resolving formatting, subregion rolls up header, obtains total sector number TotalS of subregion, initializes current sector number CurrentS=0；
S102, it is judged that CurrentS TotalS, if it is, terminate, if it is not, then forward step S103 to；
S103, reads the data of CurrentS sector, and judges that whether this sector is the sector of first grade file folder according to folder data judging rules, if it is, forward step S104 to, if it is not, then forward step S102 after CurrentS=CurrentS+1 to；
S104, DS=CurrentS, start down to resolve corresponding file or folder information until running into the directory entry not meeting architectural feature and just stopping according to the structure of exFAT file directory item from CurrentS always, the sector number of this sector is ValidS, is resolved to file i by corresponding starting cluster DCiIt is deposited in list DC, i=1,2,3 ..., n；
S105, it is judged that n 1, if it is, terminate, otherwise forwards step S106 to；
S106, it is judged that whether CurrentS is equal to ValidS, if it is, forward step S102 after CurrentS=CurrentS+1 to, if it is not, then forward step S102 after CurrentS=ValidS to.
Further, step S103 file folder data judging rules is:
Condition one: the 1st byte of sector is 0x85 and the 16th byte is 0xC0 and the 32nd byte is 0xC1；
Condition two: the 1st byte of sector is 0x05 and the 16th byte is 0x40 and the 32nd byte is 0x41；
When the data of this sector meet any one in two above condition, then this sector is the sector of file, is not otherwise the sector of file.
Further, in acquiring unit, a bunch start sector number computing rule is:
Element DC in starting cluster list DCiRepresent that same first grade file presss from both sides with DS, therefore computing formula be:
CSSSi=DS-DCi* CS/SSize,
Wherein, bunch start sector number CSSSi, i=1,2,3 ..., n.
Although specifically showing in conjunction with preferred embodiment and describing the present invention; but those skilled in the art should be understood that; in the spirit and scope without departing from appended claims invention defined; the present invention can be made a variety of changes in the form and details, be protection scope of the present invention.
Claims (8)
1. restoration methods after an exFAT document formatting, it is characterised in that: it comprises the following steps,
S1, after resolving formatting, subregion rolls up header, obtains bunch start sector number CSS1, bunch size CS, sector-size SSize；
S2, all starting cluster list DC={DC of the file that the start sector number DS of acquisition first grade file folder correspondence and this first grade file folder include1, DC2, DC3..., DCn, n is the All Files folder sum that first grade file folder includes；
S3, obtains bunch start sector number CSS2 by bunch start sector number computing rule；
S4, it is judged that whether CSS1 is be more than or equal to CSS2, and if so, then bunch start sector number CSS=CSS1, if it is not, then bunch start sector number CSS=CSS2；
S5, scans all of file and folder information, haptophore start sector number CSS, bunch size CS, by disk read operation, recovers file from formatted exFat subregion.
2. restoration methods after exFAT document formatting as claimed in claim 1, it is characterised in that: described step S2 includes step in detail below,
S101, after resolving formatting, subregion rolls up header, obtains total sector number TotalS of subregion, initializes current sector number CurrentS=0；
S102, it is judged that CurrentS TotalS, if it is, terminate, if it is not, then forward step S103 to；
S103, reads the data of CurrentS sector, and judges that whether this sector is the sector of first grade file folder according to folder data judging rules, if it is, forward step S104 to, if it is not, then forward step S102 after CurrentS=CurrentS+1 to；
S104, DS=CurrentS, start down to resolve corresponding file or folder information until running into the directory entry not meeting architectural feature and just stopping according to the structure of exFAT file directory item from CurrentS always, the sector number of this sector is ValidS, is resolved to file i by corresponding starting cluster DCiIt is deposited in list DC, i=1,2,3 ..., n；
S105, it is judged that n 1, if it is, terminate, otherwise forwards step S106 to；
S106, it is judged that whether CurrentS is equal to ValidS, if it is, forward step S102 after CurrentS=CurrentS+1 to, if it is not, then forward step S102 after CurrentS=ValidS to.
3. restoration methods after exFAT document formatting as claimed in claim 2, it is characterised in that: described step S103 file folder data judging rules is:
Condition one: the 1st byte of sector is 0x85 and the 16th byte is 0xC0 and the 32nd byte is 0xC1；
Condition two: the 1st byte of sector is 0x05 and the 16th byte is 0x40 and the 32nd byte is 0x41；
When the data of this sector meet any one in two above condition, then this sector is the sector of file, is not otherwise the sector of file.
4. restoration methods after exFAT document formatting as claimed in claim 1, it is characterised in that: in described step S3, a bunch start sector number computing rule is:
Element DC in starting cluster list DCiRepresent that same first grade file presss from both sides with DS, therefore computing formula be:
CSSSi=DS-DCi*CS/SSize,
5. recovery device after an exFAT document formatting, it is characterised in that: it includes,
Resolution unit, is used for resolving formatting subregion volume header, obtains bunch start sector number CSS1, bunch size CS, sector-size SSize and total sector number TotalS；
Acquiring unit, all starting cluster list DC={DC of the file that the start sector number DS and this first grade file folder for obtaining first grade file folder correspondence includes1, DC2, DC3..., DCn, n is the All Files folder sum that first grade file folder includes, and obtains bunch start sector number CSS2 by bunch start sector number computing rule, judge that whether CSS1 is be more than or equal to CSS2, if so, then bunch start sector number CSS=CSS1, if it is not, then bunch start sector number CSS=CSS2；
Scanning element, is used for scanning all of file and folder information,
Recovery unit, for haptophore start sector number CSS, bunch size CS, by disk read operation, from quilt
The exFat subregion of formatting recovers file.
6. recovery device after exFAT document formatting as claimed in claim 5, it is characterised in that: described acquiring unit obtains start sector number DS corresponding to first grade file folder and all starting cluster list DC of file that this first grade file folder includes specifically include following steps:
S101, after resolving formatting, subregion rolls up header, obtains total sector number TotalS of subregion, initializes current sector number CurrentS=0；
S102, it is judged that CurrentS TotalS, if it is, terminate, if it is not, then forward step S103 to；
S103, reads the data of CurrentS sector, and judges that whether this sector is the sector of first grade file folder according to folder data judging rules, if it is, forward step S104 to, if it is not, then forward step S102 after CurrentS=CurrentS+1 to；
S104, DS=CurrentS, start down to resolve corresponding file or folder information until running into the directory entry not meeting architectural feature and just stopping according to the structure of exFAT file directory item from CurrentS always, the sector number of this sector is ValidS, is resolved to file i by corresponding starting cluster DCiIt is deposited in list DC, i=1,2,3 ..., n；
S105, it is judged that n 1, if it is, terminate, otherwise forwards step S106 to；
S106, it is judged that whether CurrentS is equal to ValidS, if it is, forward step S102 after CurrentS=CurrentS+1 to, if it is not, then forward step S102 after CurrentS=ValidS to.
7. restoration methods after exFAT document formatting as claimed in claim 6, it is characterised in that: described step S103 file folder data judging rules is:
Condition one: the 1st byte of sector is 0x85 and the 16th byte is 0xC0 and the 32nd byte is 0xC1；
Condition two: the 1st byte of sector is 0x05 and the 16th byte is 0x40 and the 32nd byte is 0x41；
When the data of this sector meet any one in two above condition, then this sector is the sector of file, is not otherwise the sector of file.
8. restoration methods after exFAT document formatting as claimed in claim 5, it is characterised in that: in described acquiring unit, a bunch start sector number computing rule is:
Element DC in starting cluster list DCiRepresent that same first grade file presss from both sides with DS, therefore computing formula be:
CSSSi=DS-DCi*CS/SSize,
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610084445.1A CN105760473A (en) | 2016-02-11 | 2016-02-11 | Recovery method and device used after exFAT file formatting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610084445.1A CN105760473A (en) | 2016-02-11 | 2016-02-11 | Recovery method and device used after exFAT file formatting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105760473A true CN105760473A (en) | 2016-07-13 |
Family
ID=56330011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610084445.1A Pending CN105760473A (en) | 2016-02-11 | 2016-02-11 | Recovery method and device used after exFAT file formatting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105760473A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109710455A (en) * | 2018-11-22 | 2019-05-03 | 厦门市美亚柏科信息股份有限公司 | Deletion file access pattern method and system based on FAT32 file system |
| CN112379839A (en) * | 2020-11-13 | 2021-02-19 | 万兴科技集团股份有限公司 | Data recovery method and device, computer equipment and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101515276A (en) * | 2008-12-29 | 2009-08-26 | 北京握奇数据系统有限公司 | Method for write operation of file data, and recovery method and recovery system for file data |
| US20100017443A1 (en) * | 2008-06-16 | 2010-01-21 | Huawei Technologies Co., Ltd. | Method, terminal, and system for soft-deleting, restoring, and synchronizing data |
| CN102254048A (en) * | 2011-08-24 | 2011-11-23 | 深圳市万兴软件有限公司 | Data recovering method and system |
| CN105760244A (en) * | 2016-02-02 | 2016-07-13 | 厦门市美亚柏科信息股份有限公司 | exFAT formatting recovery method and device based on hypothesis and verification |
-
2016
- 2016-02-11 CN CN201610084445.1A patent/CN105760473A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100017443A1 (en) * | 2008-06-16 | 2010-01-21 | Huawei Technologies Co., Ltd. | Method, terminal, and system for soft-deleting, restoring, and synchronizing data |
| CN101515276A (en) * | 2008-12-29 | 2009-08-26 | 北京握奇数据系统有限公司 | Method for write operation of file data, and recovery method and recovery system for file data |
| CN102254048A (en) * | 2011-08-24 | 2011-11-23 | 深圳市万兴软件有限公司 | Data recovering method and system |
| CN105760244A (en) * | 2016-02-02 | 2016-07-13 | 厦门市美亚柏科信息股份有限公司 | exFAT formatting recovery method and device based on hypothesis and verification |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109710455A (en) * | 2018-11-22 | 2019-05-03 | 厦门市美亚柏科信息股份有限公司 | Deletion file access pattern method and system based on FAT32 file system |
| CN112379839A (en) * | 2020-11-13 | 2021-02-19 | 万兴科技集团股份有限公司 | Data recovery method and device, computer equipment and storage medium |
| CN112379839B (en) * | 2020-11-13 | 2022-12-02 | 万兴科技集团股份有限公司 | Data recovery method and device, computer equipment and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101456757B1 (en) | Method and Apparatus for recovering deleted data for SQLite database | |
| CN102937926A (en) | Method and device for recovering deleted sqlite files on mobile terminal | |
| CN103473099B (en) | Software upgrading method and system for mobile terminal | |
| CN110569147B (en) | Deleted file recovery method based on index, terminal device and storage medium | |
| CN110837393A (en) | Method and device for manufacturing firmware differential upgrade package and readable storage medium | |
| EP3798842A1 (en) | Database deleted record recovery method and system | |
| KR101593184B1 (en) | Method and apparatus for recovering partition based on file system metadata | |
| CN105760244A (en) | exFAT formatting recovery method and device based on hypothesis and verification | |
| Li et al. | Database management strategy and recovery methods of Android | |
| CN105760473A (en) | Recovery method and device used after exFAT file formatting | |
| CN105786653B (en) | File access pattern method and its system based on FAT32 file system | |
| CN109344163B (en) | Data verification method and device and computer readable medium | |
| CN117539849A (en) | Data migration method and device of heterogeneous database, storage medium and electronic device | |
| KR101670473B1 (en) | Method for recovering deleted data by mysql innodb database | |
| CN110297781B (en) | Method for recovering deleted data in APFS (advanced File System) based on copy-on-write | |
| EP3731109B1 (en) | Versioned backup on object addressable storage system | |
| CN102662981B (en) | Windows recycle bin delete record forensics method based on feature scan | |
| CN108021472A (en) | The formatting restoration methods and storage medium of ReFS file system | |
| CN113037521B (en) | Method for identifying state of communication equipment, communication system and storage medium | |
| CN110874398B (en) | Forbidden word processing method and device, electronic equipment and storage medium | |
| CN114281769A (en) | Method and device for managing files on disk, computer equipment and storage medium | |
| KR101657592B1 (en) | A recovery method of deleted data for MySQL MyISAM database | |
| CN111045868B (en) | Method and device for automatically recovering database data | |
| CN110543452B (en) | Data acquisition method and equipment | |
| CN109491861B (en) | Database repair method and device for overflow page exception and storage medium |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160713 |
|
| WD01 | Invention patent application deemed withdrawn after publication |