1, Scandisk the most common hard drives used to solve the logical bad sectors, but the common Format command can not be played on any hard disk damage repair role. If the hard disk has bad sectors，in the  circumstances of the Windows system, to “My Computer” and select the drive letter, choose its “Properties”, select “Error-checking status” from “Tools” button, Click “Start Check” and then the “Scan Type” selected “full inspection”, and “automatic fix error” branded “hook” and then “Start” can, it will make a full scan of the hard disk, and automatic correct the bad clusters that may appears.
Secondly, in the Dos state, if the hard disk has bad sectors, the computer will run Scandisk automatically to scan when starts normally, and marked  black red cluster of “B” (bad). If the system at boot time without disk scan or have not access to Windows systems, can also be used a computer diskette or CD-ROM boot disk, run Scandisk *: (Note * In order to scan the hard disk drive letter) under the corresponding letter ,to repair the hard disk partition that need for corresponding scanning.
2, NDD “disk doctor” and PCTOOLS and other related tools to scan the hard disk repair hard disk bad sectors are the most commonly used method.
3, if the hard disk appeared bad clusters or physical sectors that can’t be repaired, we can use some of disk software and divide it  into separate areas then hidden it, then you can extend a lot of hard disk a normal life.
4, the system shows “TRACK 0 BAD, DISK UNUSABLE”, meaning “zero track damage, the hard disk can not use” or when use ScanDisk to scan your hard disk other 0 sectors appeared red “B”. The hard disk sector 0 is damaged, it is reasonable to use some software such as Pctools9.0 and NU8 to shield the scrapped 0 sector, replaced with sector 1 will be able to play a life-giving effect, for example.to Pctools9.0,
After start computer with the CD-ROM, run Pctools9.0 directory De.exe file, and then select the main menu Select – Drive, after the Drive type items into the election Physical, and then press Tall switch to the Drives, select the hard disk, and then enter OK return to the main menu, open the Select menu Partition Table will appear, selected the hard disk partition table information after entering.
The hard drive has two partitions, locate the C zone, the partition is started from the hard disk 0 cylinder, then change Beginning Cylinder 0 of partition 1 to 1, and save, exit. Restart the computer and press Del key to enter Coms settings, run “Ide Auto Detect”, you can see CYLS from 782 into 781, Save,Exit and re-format the hard disk partition
