The fix method of grub boot menu under Linux operating system

1. Put the first sheet of the installation disk into the optical drive, and then reboot the machine to boot the system in the BIOS using an optical drive.

2. After the installation interface comes out, press [F4] key (Fedora, select Rescue System), that is, into the Linux rescue mode.

3. Then you will be able to configure the language and keyboard and continue as needed.

4. Then the character will appear:

sh-3.2#

5. We can operate grub ... Ha... As long as can appear like this, later are small case, I just don't say, who can understand, the earth people know .... Enter the following instructions into grub:

Sh-3.2#grub

This character will appear after the carriage return:

Grub>

We can then, after the character, enter the following instruction:

Grub>root (Hdx,y)

(Please note that there is a space between root and (Hdx,y), where x, if it is a disk, is 0, if you install the Linux root partition on the second hard drive, that x is 1; Y is the root partition that contains the Linux system. ）

Grub>setup (hd0)

The Setup (hd0) is to write grub on the MBR of the hard disk. ）

If successful, in a pile of English will have successful words appear, if not appear, it is incorrect.