Centos repair grub

The grub startup Item is damaged and cannot enter the system. Go to grub mode (you can arrange disk rescue and enter grub in shell ).

I:
Find the correct grub location using one of the following three commands.
1. Find/boot/GRUB/stage1
2. Find/GRUB/stage1
3. Find/stage1
For example, return (hd1, 2)

II:
Run
Root (hd1, 2) # Use the returned values found above
Setup (hd0)
Reboot

Modify the root (hdx, Y) Row in/etc/grub. conf in shell to root (hd1, 2)

Restart.

Centos repair grub