Windows Reload causes GRUB corruption

I a disk 7th partition installed Linux, the first partition first installed XP, after reloading for windows8.1, found that grub boot is gone, directly into the windows, the solution is as follows:

1, LiveCD into the system, open the shell

2. Enter Sh#fdisk-l to enter the disk list. Write down where your Linux and Windows are installed.

3, Input Sh#grub, enter the GRUB configuration interface

Grub>root (hdx,y) Here the X and Y representatives are numbers. That is, hd0,1 represents the first partition of the first hard disk. Fill in the content you just saw in Fdisk.

If correct, it will prompt to recognize this disk format for Linux

Grub>setup (HdX) The X and previous values here are consistent, and if successful, you will be prompted succeed

And then

Grub>quit

Sh#reboot

Repair complete.

Note that after rebooting, you may be prompted to find the system, and then edit root (hdx,y) in grub to find the appropriate disk.

Windows Reload causes GRUB corruption