CN101620651B - Method and device for clearing data in computer - Google Patents
Method and device for clearing data in computer Download PDFInfo
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- CN101620651B CN101620651B CN 200810116000 CN200810116000A CN101620651B CN 101620651 B CN101620651 B CN 101620651B CN 200810116000 CN200810116000 CN 200810116000 CN 200810116000 A CN200810116000 A CN 200810116000A CN 101620651 B CN101620651 B CN 101620651B
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Abstract
The invention discloses a method and a device for clearing data in a computer, which solves the problem that the prior clearing method cannot quickly, timely, completely and directionally clear hard disk data under the special condition. The method comprises the following steps: acquiring an information value of an emergent deleting flag bit in the starting-up and self-check process; judging whether the operation of data clearing is needed to be carried out or not according to the information value and generating judging information; and when the judging information shows that the operation of the data clearing is needed to be carried out, deleting data to be cleared from a hard disk. When using the computer, users can mark a particularly important document into the data to be cleared in time; under the emergent condition, the operation of document deletion only needs to press down a key, and the set important document can be deleted in the starting-up and self-check process. In addition, the deletion of programs does not depend on operating environment and operating time; and the programs can be timely deleted by one key in the states of shutdown and computer operating.
Description
Technical field
The present invention relates to field of computer technology, particularly relate to the method and the device of data in a kind of dump.
Background technology
Therefore present stage, the importance of the information in the hard disc of computer has been higher than the value of hardware itself far away, and cache data eviction techniques becomes a lot of users' demand gradually quickly and easily.Such as the computer that uses in the army, need dispose the confidential data on the hard disk fast and intactly in the urgent moment.Government's privacy mechanism for another example; The computer that the clerical workforce uses is when eliminating or renewing machine, and the data on the old hard disk need be done intactly deletion, but has only done format simply several times usually; Perhaps only in operating system, manually delete the data of thinking important; Just transfer other staff to and use, possibly cause some significant data to be omitted deletion like this, perhaps can be resumed.For another example, personal user's some private data in computing machine is being inconvenient to let other people obtain, and when needing thoroughly to delete fast and accurately, also similar trouble can occur.
To the problems referred to above, existing a solution is: use repeatedly format to do data destroying.The shortcoming of this method is: format manipulation can not directed deleted data, but the removing of globality for example can not optionally be formatd certain file or folder; And the time that complete format needs is longer, and the format application program need get into specific running environment, and moves the format application program and do the deletion action, and more complicated operates.
Also have a solution to be: under operating system, to use certain applications program (like shareware such as file comminutors), do the deletion of data.This method can be directed, deleted data repeatedly; But; Because these application programs operate under the operating system; So can not delete a part of system file of the operating system of current operation, otherwise system can collapse, for example under operating system, can not at random delete the system file under the C dish.And; Come if desired file to be deleted in emergency condition, because the operation of application program depends on operating system temporarily; Need guarantee also that current computer runs under the proper state (promptly starts under the operating system), at this moment just can not immediately delete file.
In sum, under special circumstances, the data in the dump need guarantee fast, the characteristic of instant, the directed deletion of complete sum.But above-mentioned first method can't guarantee to remove with directed fast, and second method can't guarantee quick removing.
Summary of the invention
Technical matters to be solved by this invention provides the method and the device of data in a kind of dump, can't be under special circumstances to solve existing sweep-out method, and quick, instant, complete, directionally remove the problem of hard disc data.
For solving the problems of the technologies described above,, the invention discloses following technical scheme according to specific embodiment provided by the invention:
The method of data in a kind of dump comprises:
In the process of startup self-detection, obtain the value of information of urgent deleted marker position;
According to the said value of information, judge whether the operation that need clear data to produce a judgement information;
When operation that said judgement information representation need clear data, wait to clear data from the hard disk deletion.
Wherein, before the said value of information of obtaining urgent deleted marker position, also comprise: the value of information that said urgent deleted marker position is set.
Wherein, the said value of information that urgent deleted marker position is set comprises: in the process of startup self-detection, detect and preset button and be triggered, the value of information of said urgent deleted marker position then directly is set.
Wherein, The said value of information that urgent deleted marker position is set is carried out when the previous computer operation condition of said startup self-detection; The said value of information that urgent deleted marker position is set comprises: detect the said button that presets and be triggered; Then the calling system interrupt handling routine is provided with the value of information of said urgent deleted marker position, and restarts computing machine.
Wherein, said wait to clear data from hard disk deletion comprise: read attribute information to be cleared data from hard disk, said attribute information comprises data storage location, removes priority and number of purge; According to said attribute information, read from data storage location and to wait to clear data, and delete according to removing priority and number of purge.
Wherein, attribute information said to be cleared data is stored in the reserved location of hard disk.
Wherein, said preservation comprises: clear data and attribute information according to directed the waiting of being provided with of user, the attribute information to be cleared data that invokes application is provided with the user is saved in the reserved location of hard disk.
Whether wherein, said method also comprises: detect attribute information said to be cleared data and be updated; When attribute information said to be cleared data is updated,, the attribute information after the said renewal is updated to the reserved location of hard disk through the mode that the user is provided with once more or application program is upgraded automatically.
The device of data in a kind of dump comprises:
The zone bit acquiring unit is used for the process in startup self-detection, obtains the value of information of urgent deleted marker position;
The data dump unit is used for the process in startup self-detection, and boot is according to the said value of information, judges whether the operation that need clear data to produce a judgement information; When operation that said judgement information representation need clear data, then be directed routine call and carry out from hard disk deletion operation to be cleared data.
Wherein, said device also comprises: zone bit is provided with the unit, is used to be provided with the value of information of said urgent deleted marker position.
Wherein, said zone bit is provided with the unit in the process of startup self-detection, detects to preset button and be triggered, and the value of information of said urgent deleted marker position then directly is set.
Wherein, Said zone bit is provided with the unit when the previous computer operation condition of said startup self-detection, detects the said button that presets and is triggered, then the calling system interrupt handling routine; The value of information of said urgent deleted marker position is set, and restarts computing machine.
Wherein, said data dump unit reads attribute information to be cleared data from hard disk, and said attribute information comprises data storage location, removes priority and number of purge; According to said attribute information, read from data storage location and to wait to clear data, and delete according to removing priority and number of purge.
Wherein, said device also comprises: preserve the unit, be used for attribute information said to be cleared data is saved in the reserved location of hard disk.
Wherein, said preservation unit clears data and attribute information according to directed the waiting of being provided with of user, and the attribute information to be cleared data that invokes application is provided with the user is saved in the reserved location of hard disk.
Wherein, said device also comprises: whether updating block is used to detect attribute information said to be cleared data and is updated; When attribute information said to be cleared data is updated,, the attribute information after the said renewal is updated to the reserved location of hard disk through the mode that the user is provided with once more or application program is upgraded automatically.
The device of data in a kind of dump comprises:
The zone bit acquiring unit is used for the process in startup self-detection, obtains the value of information of urgent deleted marker position;
The data dump unit is used to be directed routine call, according to the said value of information, judges whether the operation that need clear data to produce a judgement information; When operation that said judgement information representation need clear data, wait to clear data from the hard disk deletion.
Wherein, said device also comprises: zone bit is provided with the unit, is used to be provided with the value of information of said urgent deleted marker position.
Wherein, said zone bit is provided with the unit in the process of startup self-detection, detects to preset button and be triggered, and the value of information of said urgent deleted marker position then directly is set.
Wherein, Said zone bit is provided with the unit when the previous computer operation condition of said startup self-detection, detects the said button that presets and is triggered, then the calling system interrupt handling routine; The value of information of said urgent deleted marker position is set, and restarts computing machine.
A kind of computing machine comprises:
The zone bit acquiring unit is used for the process in startup self-detection, obtains the value of information of urgent deleted marker position;
Double mode bootstrap module is used for the process in startup self-detection, according to the said value of information, judges whether the operation that need clear data to produce a judgement information; When operation that said judgement information representation need clear data, call the data dump unit;
The data dump unit is used for waiting to clear data from the hard disk deletion.
Wherein, said computing machine also comprises: zone bit is provided with the unit, is used for being provided with at CMOS the value of information of said urgent deleted marker position.
According to specific embodiment provided by the invention, the present invention has following technique effect:
At first, when the user can use a computer under general case, immediately want file mark to clear data certain heavy for waiting; In case of emergency, the operation of deleted file only need can be deleted the vital document of setting in the process of startup self-detection by next button (perhaps add the step of step input password, guarantee safety).And delete program does not rely on running environment, the time of running, under off-mode and computer operation condition, can accomplish instant key removing.
Secondly, the user can also be provided with the priority and the number of purge of removing when setting is to be cleared data, and is about to certain heavy and wants levels of confidentiality different on the file mark, divides the deletion of priority during directed the deletion according to the importance of file.
Once more, owing to be directed deleted file, not overall format; And thorough delete procedure depends on the level of confidentiality of setting; Therefore the deletion of weight has to some extent reduced the erasable repeatedly number of times to non-high-level vital document, so the time that needs also can be less relatively.
Description of drawings
Fig. 1 be the embodiment of the invention one said under off-mode the method flow diagram of data in the dump;
Fig. 2 be the embodiment of the invention two said under computer operation condition the method flow diagram of data in the dump;
Fig. 3 is the first example structure figure of the device of data in a kind of dump according to the invention;
Fig. 4 is the second example structure figure of the device of data in a kind of dump according to the invention.
Embodiment
For make above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, below in conjunction with accompanying drawing and embodiment the present invention done further detailed explanation.
The invention provides the method for data in a kind of key dump, can accomplish instant, that do not rely on the operating system state, directed deletion specific file, and do complete removing according to the information such as priority of file.Specify below.
At first; The data that the present invention allows the free setting of user to remove; Setting means is: in the function menu of right mouse button, increase option, and when the user uses a computer, setting application program to be cleared data of running background; The user can pass through right mouse button at any time, clicks certain vital document or file and is provided with.Simultaneously, the attribute informations such as memory location of file on hard disk recorded the reserved location of hard disk by this background application.
Wherein, the stored position information of said file comprises the information (in the new technology file system) used among linking relationship (in the FAT32 file system) or the BITMAP (bitmap) between the path of file in file system (hard disk), filename, initial sector, use bunch bunch etc.
Said reserved location can be any position of hard disk, but need set in advance, directly comes reading of data from said reserved location because need in the subsequent step.Present embodiment preferably for subsequent reads is fetched data convenient and purpose of safety, is arranged on the reserve sector of each subregion head of hard disk or the hiding dedicated sectors of the terminal high address of hard disk with said reserved location.
When the user is provided with through function choosing-item, the level of confidentiality and the number of purge of file can also be set.The level of confidentiality of file indicates the important level of file, and level of confidentiality is different, and the priority of removing is also different.The security information of file and number of purge also are saved to the reserved location of hard disk as the attribute information of file.
If attribute information to be cleared data is updated; Being sheared the alternative document folder like filename renewal, file causes the memory location to change; Or the like under the situation; The user can be updated to the attribute information of file the reserved location of hard disk through automatically mode such as detection of level of confidentiality or background application independently is set once more.
After the user has set the data of urgent removing, under the situation that needs are removed, just can remove the significant data of these settings fast, up hill and dale through the mode of key removing.The scene of data dump comprises to be removed under the off-mode and computer operation condition removing down, specifies respectively below.
Embodiment one:
With reference to Fig. 1, be embodiment one said under off-mode the method flow diagram of data in the dump.
When computing machine under off-mode, if the user need remove the vital document of having set, carry out following flow process:
S101, user press predefined button, trigger clear operation.
Said predefined button can be original certain button or a key combination on the QWERTY keyboard, also can be " key removing " function button that on the primary standard keyboard, increases newly.
S102, computing machine gets into starting state, and system begins guiding, in the process of BIOS self check, detects the said button that presets and is triggered, and urgent deleted marker position information then is set.For example, this mark position 1 expression button is pressed.
In the present embodiment, the setting of can programming of said urgent deleted marker position (CMOS often refers to preserve the chip of the basic log-on message of computing machine) in CMOS, a lot of BIT position among the CMOS.Be said urgent deleted marker position if defined a certain position among the CMOS in advance, then behind computer booting, whether the zone bit in the process of BIOS self check among this CMOS of meeting dynamic chek is 1, thereby confirms the mode of user's start.Certainly, said urgent deleted marker position also can be arranged in other hardware or software program of computing machine.
S103; DMBM module among the BIOS (this module is integrated among the BIOS for Dual Mode Boot Module, double mode bootstrap module) is according to said zone bit information; Determine whether to guide to get into and be stored in the terminal key removing functional module (OKE that protects subregion of hard disk; One Key Erase Module), thereby incites somebody to action each level of confidentiality file of mark before, carry out different priorities, the removing of different erasable number of times ground.If the information in the zone bit is 1, then continue S104; Otherwise, carry out common BIOS self check, continue to accomplish start process.
Wherein, said double mode guiding is a kind of system bootstrap mode, and in this mode, the user can call a single feature operation system through a button or key groups are incompatible, perhaps not according to any button, gets into the normal running system according to the normal guidance mode.
S104, if the information in the zone bit is 1, then DMBM module booting OKE module is accomplished clear operation.The OKE module at first reads the attribute information of waiting to remove file from the reserved location of hard disk, and said attribute information comprises file storage location information, security information (being priority), number of purge etc.
S105, the OKE module is according to removing listed files, and according to the information such as memory location of the height of level of confidentiality, number of purge, file, the write activity of random number done repeatedly in the file position, to reach the purpose of removing.
S106, after removing finished, system shut down automatically.The present invention do not limit remove finish after system where manage, system can shut down automatically, also can continue start process.
Embodiment two:
With reference to Fig. 2, be embodiment two said under computer operation condition the method flow diagram of data in the dump.
When computer run (after comprising that the BIOS self check is accomplished) under free position,, carry out following flow process if the user need remove the vital document of having set:
S201, user press predefined button, trigger clear operation.
S202, computer system is called SMI (System Management Interrupt, system management interrupt) interrupt handling routine, and urgent deleted marker position information (as with the emergency sign position 1 among the CMOS) is set, and quick by force object computer is restarted.
S203; Computing machine is restarted, and system begins guiding, in the process of BIOS self check; DMBM module among the BIOS is according to said zone bit information; Determine whether to guide to get into the OKE module that is stored in the terminal protection of hard disk subregion, thus will before each level of confidentiality file of mark, carry out different priorities, the removing of different erasable number of times ground.If the information in the zone bit is 1, then continue S204; Otherwise, carry out common BIOS self check, continue to accomplish start process.
S204, if the information in the zone bit is 1, then DMBM module booting OKE module is accomplished clear operation.The OKE module at first reads the attribute information of waiting to remove file from the reserved location of hard disk, and said attribute information comprises file storage location information, security information (being priority), number of purge etc.
S205, the OKE module is according to removing listed files, and according to the information such as memory location of the height of level of confidentiality, number of purge, file, the write activity of random number done repeatedly in the file position, to reach the purpose of removing.
S206, after removing finished, system shut down automatically.The present invention do not limit remove finish after system where manage, system can shut down automatically, also can continue start process.
In the reset procedure of above-mentioned two embodiment, also have a kind of DMBM guidance mode, as follows:
The DMBM module is integrated among the BIOS; Each start can arrive all that hard disk is high-end searches and move DM module (abbreviation of HDBM, Hard Disk Boot Module, hard disk bootstrap module; Be installed in the hard disk), the effect of DM module is the special applications functional module of dispatching other.For example, the DM module determines whether to call the OKE module and carries out clear operation according to said zone bit information.
In sum, the present invention provides the file purging method of a kind of quick (number of purge is variant), directed (remove file appointment is arranged), instant (removing is unrestricted opportunity), thorough (number of purge is repeatedly) for the user.When the user can use a computer, instant certain heavy is wanted levels of confidentiality different on the file mark under general case; In case of emergency; The operation of deleted file only need be by next button (perhaps additional one go on foot the step of importing password, guarantee safety), and the deletion action is the deletion of the branch priority of orientation; And delete program does not rely on running environment, the time of running, can accomplish that an instant key calls.And, owing to be directed deleted file, not overall format; And thoroughly delete procedure depends on the level of confidentiality of setting, and the deletion of weight has to some extent reduced the erasable repeatedly number of times to non-high-level vital document, so the time that needs also can be less relatively.
To an above-mentioned key sweep-out method, the present invention also provides the device embodiment of data in a kind of dump.With reference to Fig. 3, be the structural drawing of first embodiment of said device.Said device mainly comprises zone bit acquiring unit U31 and data dump unit U32.Wherein:
Zone bit acquiring unit U31 is used for the process in startup self-detection, obtains the value of information of urgent deleted marker position;
Data dump unit U32 is used for the process in startup self-detection, and boot is according to the said value of information, judges whether the operation that need clear data to produce a judgement information; When operation that said judgement information representation need clear data, then be directed routine call and carry out from hard disk deletion operation to be cleared data.
Said device also comprises: zone bit is provided with unit U33, is used to be provided with urgent deleted marker position information;
The treatment scheme of said device is following:
If under off-mode; The user presses predefined button; Computing machine gets into starting state; In the process of BIOS startup self-detection, detect the said button that presets and be triggered, then call said zone bit and unit U33 is set urgent deleted marker position information (as with the emergency sign position 1 among the CMOS) is set.Then; The said zone bit information that DMBM module among the BIOS is obtained according to zone bit acquiring unit U31; Determine whether to guide to get into and be stored in the terminal data dump unit U32 that protects subregion of hard disk; Thereby each level of confidentiality file of mark carries out different priorities, the removing of different erasable number of times ground before.
If under computer operation condition (after comprising that the BIOS self check is accomplished); The user presses predefined button; Computer system is called the SMI interrupt handling routine; The SMI interrupt handling routine is provided with unit U33 calling zone bit, and urgent deleted marker position information is set, and by force fast object computer restart.In the restarting process of computing machine; DMBM module among the BIOS is according to the said zone bit information of zone bit acquiring unit U31; Determine whether to guide to get into and be stored in the terminal data dump unit U32 that protects subregion of hard disk; Thereby each level of confidentiality file of mark carries out different priorities, the removing of different erasable number of times ground before.
Said data dump unit U32 at first reads attribute information to be cleared data from hard disk, and said attribute information comprises data storage location, removes priority (being security information) and number of purge; Then according to removing listed files, and according to the information such as memory location of the height of level of confidentiality, number of purge, file, the write activity of random number is done repeatedly in the file position, to reach the purpose of removing.
Said device also comprises preserves unit U34, is used for attribute information said to be cleared data is saved in the reserved location of hard disk.Said preservation unit U34 clears data and attribute information according to directed the waiting of being provided with of user, and the attribute information to be cleared data that invokes application is provided with the user is saved in the reserved location of hard disk.
Whether said device also comprises updating block U35, be used to detect attribute information said to be cleared data and be updated; When attribute information said to be cleared data is updated,, the attribute information after the said renewal is updated to the reserved location of hard disk through the mode that the user is provided with once more or application program is upgraded automatically.
In practical application, the present invention also provides another embodiment of said device.With reference to Fig. 4, be the second example structure figure of the device of data in said a kind of dump.Said device comprises that also zone bit is provided with unit U41, data dump unit U42 and zone bit unit U43 is set; Wherein, Zone bit acquiring unit U41 is identical with the function of zone bit acquiring unit U31, all is used for when presetting button and be triggered, urgent deleted marker position information being set.But data dump unit U42 is used to be directed routine call, in the process of startup self-detection, according to said zone bit information, judges whether to carry out clear operation; If then carry out from hard disk deletion operation to be cleared data.Data dump unit U32 only is used to clear data, and determines whether to clear data and data dump unit U42 is used for judgement symbol position information.
Calculate the relation of power traction helical pitch preface (DMBM module) and data dump unit among comparison diagram 3 and Fig. 4.Among Fig. 3, boot judgement symbol position information if be clear flag, is then called data dump unit U32.Among Fig. 4, boot all can be called data dump unit U42 in each start process, by U42 judgement symbol position, data dump unit information, thereby determines whether to carry out clear operation.
Said device can also comprise preserves unit U44 and updating block U45, and function is not described in detail in this as preserving unit U34 and updating block U35.
The present invention also provides a kind of computing machine, comprising:
The zone bit acquiring unit is used for the process in startup self-detection, obtains the value of information of urgent deleted marker position;
Double mode bootstrap module is used for the process in startup self-detection, according to the said value of information, judges whether the operation that need clear data to produce a judgement information; When operation that said judgement information representation need clear data, call the data dump unit;
The data dump unit is used for waiting to clear data from the hard disk deletion.
Said computing machine also comprises: zone bit is provided with the unit, is used for being provided with at CMOS the value of information of said urgent deleted marker position.
The part that does not detail in Fig. 3, device shown in Figure 4 and the said computing machine can be considered for length referring to the relevant portion of Fig. 1, method shown in Figure 2, is not described in detail in this.
More than to the method and the device of data in a kind of dump provided by the present invention; Carried out detailed introduction; Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, part all can change on embodiment and range of application.In sum, this description should not be construed as limitation of the present invention.
Claims (15)
1. the method for data in the dump is characterized in that, comprising:
In the process of startup self-detection, detect and preset button and be triggered, the value of information of urgent deleted marker position then directly is set;
Obtain the value of information of urgent deleted marker position;
According to the said value of information, judge whether the operation that need clear data to produce a judgement information;
When operation that said judgement information representation need clear data, wait to clear data from the hard disk deletion.
2. method according to claim 1 is characterized in that, the said value of information that urgent deleted marker position is set is carried out when the previous computer operation condition of said startup self-detection, and the said value of information that urgent deleted marker position is set comprises:
Detect the said button that presets and be triggered, then the calling system interrupt handling routine is provided with the value of information of said urgent deleted marker position, and restarts computing machine.
3. method according to claim 1 is characterized in that, said wait to clear data from hard disk deletion comprise:
Read attribute information to be cleared data from hard disk, said attribute information comprises data storage location, removes priority and number of purge;
According to said attribute information, read from data storage location and to wait to clear data, and delete according to removing priority and number of purge.
4. method according to claim 3 is characterized in that: attribute information said to be cleared data is stored in the reserved location of hard disk.
5. method according to claim 4 is characterized in that, said preservation comprises:
Clear data and attribute information according to directed the waiting of being provided with of user, the attribute information to be cleared data that invokes application is provided with the user is saved in the reserved location of hard disk.
6. method according to claim 5 is characterized in that, said method also comprises:
Whether detect attribute information said to be cleared data is updated;
When attribute information said to be cleared data is updated,, the attribute information after the said renewal is updated to the reserved location of hard disk through the mode that the user is provided with once more or application program is upgraded automatically.
7. the device of data in the dump is characterized in that, comprising:
Zone bit is provided with the unit, is used for the process in startup self-detection, detects to preset button and be triggered, and the value of information of urgent deleted marker position then directly is set;
The zone bit acquiring unit is used for the process in startup self-detection, obtains the value of information of urgent deleted marker position;
The data dump unit is used for the process in startup self-detection, and boot is according to the said value of information, judges whether the operation that need clear data to produce a judgement information; When operation that said judgement information representation need clear data, then called execution from hard disk deletion operation to be cleared data by said boot.
8. device according to claim 7 is characterized in that:
Said zone bit is provided with the unit when the previous computer operation condition of said startup self-detection, detects the said button that presets and is triggered, and then the calling system interrupt handling routine is provided with the value of information of said urgent deleted marker position, and restarts computing machine.
9. device according to claim 7 is characterized in that:
Said data dump unit reads attribute information to be cleared data from hard disk, and said attribute information comprises data storage location, removes priority and number of purge; According to said attribute information, read from data storage location and to wait to clear data, and delete according to removing priority and number of purge.
10. device according to claim 9 is characterized in that, said device also comprises:
Preserve the unit, be used for attribute information said to be cleared data is saved in the reserved location of hard disk.
11. device according to claim 10 is characterized in that: said preservation unit clears data and attribute information according to directed the waiting of being provided with of user, and the attribute information to be cleared data that invokes application is provided with the user is saved in the reserved location of hard disk.
12. device according to claim 11 is characterized in that, said device also comprises:
Whether updating block is used to detect attribute information said to be cleared data and is updated; When attribute information said to be cleared data is updated,, the attribute information after the said renewal is updated to the reserved location of hard disk through the mode that the user is provided with once more or application program is upgraded automatically.
13. the device of data is characterized in that in the dump, comprising:
Zone bit is provided with the unit, is used for the process in startup self-detection, detects to preset button and be triggered, and the value of information of urgent deleted marker position then directly is set;
The zone bit acquiring unit is used for the process in startup self-detection, obtains the value of information of urgent deleted marker position;
The data dump unit is used to be directed routine call, according to the said value of information, judges whether the operation that need clear data to produce a judgement information; When operation that said judgement information representation need clear data, wait to clear data from the hard disk deletion.
14. device according to claim 13 is characterized in that:
Said zone bit is provided with the unit when the previous computer operation condition of said startup self-detection, detects the said button that presets and is triggered, and then the calling system interrupt handling routine is provided with the value of information of said urgent deleted marker position, and restarts computing machine.
15. a computing machine is characterized in that, comprising:
Zone bit is provided with the unit, is used for the process in startup self-detection, detects to preset button and be triggered, and the value of information of urgent deleted marker position then directly is set in CMOS;
The zone bit acquiring unit is used for the process in startup self-detection, obtains the value of information of urgent deleted marker position;
Double mode bootstrap module is used for the process in startup self-detection, according to the said value of information, judges whether the operation that need clear data to produce a judgement information; When operation that said judgement information representation need clear data, call the data dump unit;
The data dump unit is used for waiting to clear data from the hard disk deletion.
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| CN 200810116000 CN101620651B (en) | 2008-07-01 | 2008-07-01 | Method and device for clearing data in computer |
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| US8812563B2 (en) * | 2010-03-02 | 2014-08-19 | Kaspersky Lab, Zao | System for permanent file deletion |
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| CN103118288B (en) * | 2011-11-16 | 2017-02-22 | 康佳集团股份有限公司 | Network television safety management system and method |
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