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2007-01-25 15: 13:25

Due to the internal hard work environment requirements are verystrict, the tiny dust into the internal hard disk will causeirreversible damage, so when the hard disk has bad sectors, wecan not open the disk for maintenance, can only through somesoftware tools to repair, so as to maximize the losses.When we determine the hard disk bad sectors, we can notdetermine this is logical or physical damage damage damage, wecan only follow from simple to complex steps to repair, generalrepair simple logical defects after software can solve thefault, but some need to repair physical bad sectors further toensure data security and normal the use of hard disk.Repair of logical bad sectors

In general, the hard disk is the reason produced logical defectssome genuine software sectors written information on the harddisk, other software cannot access this sector, in this case,the hard disk detection tool will mistakenly believe that thesector has bad sectors, generally without the need for repair,but now the software is more and more less using thisencryption.

The use of another case is improper, such as hard disk read data

were accidentally restart, there may be serious logical badsectors, and even physical bad sectors. At this point, we canscan the hard disk using the disk tool that comes with Windowsand fix the error automatically.

The specific steps are as follows (with Windows XP) , theselected letter after clicking the right mouse button on mycomputer, select the pop-up drive properties window

"Tools - start checking" and select "automatically fix filesystem errors" and "scan and restore bad sectors", then clickStart (Figure tool-1.gif) ,

The scan time varies depending on disk capacity and scanningoptions. But it' s worth noting that in Windows

98 or more of the operating system does not show the detailsof each sector, sousually in this case, we'd better select thedisk detection tool DOS under Scandisk. The Scandisk detectseach sector and flags bad sectors so that the operating systemcontinues to access the area. Guaranteed system operationstability and data security.

In general, through the above method, after the completion ofrepair bad sectors on the hard disk is still there, just do themarking system will not continue to visit, but with the harddrive to continue to use, we may find the hard disk damage mayspread, so this method cannot fundamentally solve the problem.More appropriate approach is to backup the data on the hard disk,and then re format the hard disk partition, in general, if thefault on theharddisk is just the logical badsectors, can solve

the problem thoroughly. Of course, it is recommended to repartition and format, use the DOS Scandisk again on the harddisk detection, to ensure complete repair of hard disk logicalbad sectors.

Repair of physical bad sectors

If you follow the steps above to format the partition, stillfound the hard disk has bad sectors, so it is likely that thehard disk physical bad sectors. In fact, in this case, we donot have to rush to the hard disk can repair the conclusion,can also use another software grid on the hard disk, the harddisk to format the partition, some may also be solved by thisway.

Low-level formatted hard disk

There are two ways of self,

One is the motherboard with BIOS grid tools, one is the use ofsoftware of grid. Methods through the motherboard with BIOStools will be the motherboard price limit, some of themotherboard in BIOS is not equipped with such a program, andthe new type of motherboard mostly without this grid function,it is recommended or the use of software to low-level formathard disk.

Maxtor produced a strong tool low.exe, this software can lowerthe Maxtor hard disk, in fact, this procedure can be appliedto various brands of various types of IDE hard disk. Thesoftware operation is simple, start after the press "Y" into

the software, just need to choose low price of hard disk, andthen select a start hard disk can be self selected. The generalprocess of price is relatively long, soneedtowaitpatiently.In addition, the need to remind the reader' s point is that ifyour machine is installed on the other disk, when running inlow this program will be the best price this hard to remove,to avoid data loss.

Shielding physical bad sectors

If the price is still found after bad sectors, has the hard diskphysical bad sectors that will almost certainly. Due tophysical bad sectors is usually due to hard hits or powerfailure happens, the disc rotates at a high speed, the headcould hit the disc, causing damage and the formation of themagnetic medium, even through the detection of disk operatingsystem software will be bad sectors mark, although not to visitthis sector, but usually used in physical bad sectors after aperiod of time will spread, although this is due to bad sectorsafter the mark, but may still access to the hard diskbad sectorsaround the sector, which caused the diffusion of bad sectors.Inorder to avoid bad diffusion, we'd better be bad to a shieldunused partition.

We screened defecfs to an unused partition, you can use thesoftware PQ

Magic, this software has a version of DOS and Windows, but sincewe usually have a hard drive after finding that there is stilla bad zone, and there is no Windows system installed at thistime, we recommend using the DOS version of PQ

Magic (with Chinese version) .

The adoption of PQ

Before the Magic partition, we must first find the location ofbad sectors. We can go through the Scandisk disk surface scan,after understanding the approximate location of the hard diskbad sectors, in order to determine the partition scheme. Forexample, hard disk in about 20% C or so, we can use the PQMagic will be in front of the hard disk drive approximately 25%- 30% space designated as hidden partitions.

Specific methods of operation are as follows (due to the DOSPQ Magic is not convenient screenshot, we will take Windowsversion as an example for demonstration, operation is similar) ,start PQ

Magic, in the graphical interface in the C disk icon click theright mouse button, select "resize / move" will be a pullingtool, we only need to move back from the starting position ofthe hard disk drive on it. There are hard starting position inpulling the tools below to C before the free space capacitydisplay such as C capacity of 10GB, we only need to adjust thefree space of about 3GB can be, at this time, the C capacitybecomes 7GB. In this process, should be shielded space slightlylarger, but not over the loss of capacity, so as to avoid thebad sectors will still be divided in the C disk space. Afterall, the hard drive now runs from 80GB to 120GB, losing onlya few G of capacity, but it can be worth saving a hard drive.

OK, then quit and wait for PQ

Magic mobile partition, and then restart, hard disk has beenin the hidden partition, the operating system will not be ableto access to. The success of this methodwill blocka 80GB harddisk bad sectors, use is still stable. (Note: it is recommendedthat after the completion of the new partition for shieldingbad sectors about scanning, still recommend the use of Scandisk,to ensure that the bad sectors has been completely shield tothe hidden partition. Of course, cross the space if you feelpity, can also create a new partition in bad sectors before,if not to bad sectors divided again to the new partition, butit is not recommended to do so, in order to avoid excessivepartition and too scattered, will affect the performance of alarge disk) .

Of course, this method can only partition concentrationcomparedwith the hard disk, if the hard disk is scattered moretrouble, it is proposed to replace the hard disk in order toensure the stability of the system and data security.

Hard disk repair

1. repair logical defects

Startwith the easiestway. With the help of disk scanning toolsunder Windows, select the letterafter clicking theright mousebutton in the explorer, select the pop-up drive propertieswindow (Figure 1) (Figure) "to start checking tools",

Set the scan type to full scan, select the auto fix error, and

then click start. The scan time will vary depending on diskcapacity and scanning options (Figure 2) .

If the logical defects exist in the system area lead to thenormal start, we can use the Windows 98/Me startup disk, typeat the DOS prompt: Scandisk

The drive, press enter, once the bad sectors, the program willprompt you to Fix

It (repair) , select Yes to start the repair, because many systemarea appears logical defects cannot normally start Windowsproblems can generally be solved by this method.

Because Windows 98/Me was largely automatic repair of logicalbad sectors, and can not automatically repair physical badsectors, so that the first methods are often not effective. Ifwe meet physical bad sectors should do?

2. for Scandisk examination in physical bad sectors

For physical bad sectors Scandisk incapable of action, it canonly be marked as bad sectors in this region are no longer readand write operations, physical bad sectors contagious spreadto the surrounding, resulting in near data stored inbad sectorsare in danger.

Stop to check in bad sectors with Scandisk, observe the Scandiskwill stop when the value, such as 22%, the total capacity ofassuming the hard disk 2GB, 2GB* 22%=0.44GB, the hard disk hasbad sectors starting position is roughly 440MB, because the

hard disk easily spread to the surrounding, so we must leaveenough buffer, will set up the first hard disk the partitioncapacity is 400MB, the rest of the 1.6GB according to the unitof 200MB is divided into 8 zones, using Scandisk to check allpartitions, will not be detected by Scandisk partition todelete or hide, to ensure that the system is no longer to readand write these areas. The remaining adjacent partitions canbe used together. Partitioning, hiding, deleting, merging andother operations can be done using graphical interfaces suchas PartitionMagic or DiskMan software.

3. software hidden physical bad sectors

Using PartitionMagic5.0/6.0 to process the hard disk.PartitionMagic can partition the hard disk, change thepartition size dynamically, change the file format of thepartition, hide or display the existing partition and so onwithout damaging the data. Copy the DOS version of

PartitionMagic5.0/6.0 on the floppy disk, using Windows98/Me boot disk boot system, running the PQMAGIC.EXE on thefloppy disk.

Then scan the hard disk, can be directly used in the

PartitionMagic Operations menu under the "check" command tocomplete, marking bad clusters, can try to re test it, is toselect "Advanced/badSector in the Operations menu

Retest "; the bad clusters into one (or several) area, then thepartition containing bad sectors hidden by the HidePartitionmenu item, in order to avoid misoperation in Windows 98/Me.