3, In cases where sector 0 of the hard disk is damaged, it is rather troublesome, but not beyond saving—just mask the bad sector 0 and use sector 1 to replace 0. The ideal software for doing this is PCTOOLS. Specifically, PCTOOS is a tool in DE. In the main menu, choose Drive under Select. After entering, set the Drive type item to Physical by pressing the space bar, then press TAB to switch to the Drives item, select HARD DISK, then OK. After pressing Enter you will return to the main menu. Open the SELECT menu, and at this point PARTITION TABLE will appear. Select it to enter, and the hard disk partition table information will appear. This hard disk has two partitions. Find drive C. This partition starts from cylinder 0 of the hard disk, so just change the 0 in the BEGINNING CYLINDER of partition 1 to 1. Save and exit, restart the computer, press DEL to enter the COMS settings, do "IDE AUTO DETECT" so the BIOS redetects the hard disk parameters, save and exit, then repartition and format the hard disk. The hard disk can continue to be used. Note: after the sector modification is completed, the partition table information will only be written to sector 1 after the hard disk is formatted
Download here
http://www.bear5.com/curio.htm