Replenishing Windows will override Linux bootstrap to reload the GRUB boot program. Its reasons should be online. The following is a brief introduction step:
<1>. Put the first sheet of the mounting disk in the optical drive, then restart the machine, and boot the system in BOIS.
<2>. After the installation interface comes out, press the [F4] button, which is Linux Rescue mode. If it is redhat 9.0, press whether it is [F5] button. Then enter Linux Rescue at Boot and then carriage return.
<3>. A series of keyboards and several simple formulations, [Continue] afterwards. . . This process, I don't say it, it is relatively simple.
<4>. This character will appear SH #
Then enter chroot / mnt / sysimage # to change your root directory
Grub-install / dev / hda # Install GRUB to MBR
