The boot information on the hard drive starts at 0 tracks. If 0 track damage, will cause hard disk can not read disk, boot can not find hard drive, etc., this is what we often say "0 track" failure. 0 track failure and disk bad track phenomenon is not the same, 0 track failure when the computer can not enter the operating system. And Ruan in the computer self-test, hard disk can not pass self-test, screen display "Hddcontrollererror (hard disk controller failure)" after the crash. The hard drive can still not be set on the BIOS and the hard drive cannot be found.
This is the use of computer in the process of a relatively common hard disk failure, its performance is generally in post, the system is sometimes directly shown as "track0bad,diskunusable", meaning "0 track damage, hard disk can not use." 351 Red "B" in 0 sectors when scanning other hard disks with ScanDisk. Hard disk 0 sector damage, is that we compare headaches, general cherish condition also sentenced to the hard disk death penalty, difficult to repair. But for hard disk 0 sector damage, although more difficult, but is not hopeless. In fact, a reasonable use of some disk software, the scrap of the 0 sector shielding, and with 1 sectors replaced by the "Back to the dead" may be, such software has Pctools9.0 and IG NU8, and so on.
The 0 track is in a very important position on the hard disk, and the main boot record area (MBR) of the hard disk is in this position. The MBR is located on the hard disk's 0-track 0-cylinder 1-sector, which holds the hard disk Master bootstrapper and the hard disk partition table. In a total of 512 bytes of hard disk master boot record sector, 446 bytes belong to the hard disk master boot program, 64 bytes belong to the hard disk partition table (DPT), two bytes (55AA) k to the partition end flag. This shows that 0 track once damaged, will make the hard disk's master boot and partition table information to seriously damage, resulting in hard disk can not be lifted. 0 Track damage belongs to one of the hard drive bad, just because its position is too big. To, so once the Xiao to destroy, will have serious consequences. The usual maintenance methods are fixed by Pctools9.0 de (disk editor) (or similar t-tools that can be edited for the disk sector). Here is a look at the repair method of this failure:
(1) Repair 0 tracks with de
Prepare a system boot CD and a CD with PCtools9.0, where PCtoois9.0 can also be downloaded from the Internet.
The 1th step, using the boot CD to boot the computer to boot into the DOS environment. Then put the PCtools9.0 CD in the CD-ROM and hde the directory where the disc is located and Run DE, as shown in Figure 1.
The 2nd step, the program prompts the software is running in read-only mode, select the "OK" button. The program prompts to open a file, because the purpose here is not to edit the file, the Tantric software runtime requirements must open a file, so here any idle select a file open.
3rd, you need to remove the read-only mode of the software because you have to make changes to the disk effective. Press the "ALT" key to activate the menu, using the arrow keys to select the menu "Options" (option) a "Configuration" (Stllo, as shown in Figure 2.)
Step 4th, enter the Setup interface, select the "ReadOnly" Item through the "tab" key, and press the SPACEBAR to remove the ReadOnly (Read only) check box, as shown in Figure 3.
Step 5th, select the Menu "select" (choose) A "Drive" (drive), as shown in Figure 4.
6th step, the "selectdrive" window appears. Select the "Physical" option "harddisk" in "DriveType" (hard disk) and select OK and press "enter" to enter, as shown in Figure 5.
Step 7th, select the menu "select", The "partitiontable" (partition Table) menu item becomes optional, as shown in Figure 6, select the menu item, and press the "Enter" key.
8th step, you can now see the information on the partition table. If the hard disk divides the primary partition and the extended partition, then the partition 1 and 2 will have the information, of course, if there are multiple primary partitions then 3 and 4 also have the display of the use. What needs to be modified here is the "Beginningcylinder" (starting cylinder) for partition 1. Move the cursor over the first partition's "Beginningcylinder" and modify the original "0" to "1" as shown in Figure 7. Of course, if the 1 track is also broken, you can enter "2" or even "3" here.
9th step, press ENTER after the modification is complete, and select the "Save" button in the dialog box that appears to save the changes, as shown in Figure 8. Then press the "ESC" key to exit the software.
10th step, restart the computer, press the "Delete" key into the BIOS settings, let the BIOS automatically check the hard drive settings, you can see cylinder (cylinder) than the original reduction of 1, save and exit. Re-partition the hard disk, format, so that the hard disk 0 track repair completed.
(2) Repair with Partitionmagician
Repair the damaged 0 tracks in the partition by Partitionmagician, mainly by adjusting the size of the partition, dividing the damaged part of the space as a separate partition, so that the logical 0 tracks of the original partition move forward or backward, and the data from the original partition is unaffected.
The 1th step, the boot disk to start the computer into the DOS environment, and then run Partitionmagician into its main window. Select the 0 track damaged partition and click Operations-"Resize/move" on the menu.
In the 2nd step, in the pop-up window, use the mouse to drag the slider on the left side of the capacity ruler, let the partition decrease a little, or directly manually enter the small amount of directors assigned to the partition, in order to empty out the bad area, as shown in Figure 9. Set S OK and then click the "OK" button.
Step 3rd, click the Apply button in the window to make the settings effective, and then restart the computer win7 system.