Reinstalling the GRUB Boot Loader on
Dedicated Linux Server:
Below
mentioned are the steps to reinstall a corrupted or mistakenly deleted grub
(for RedHat and CentOS systems only) using the rescue mode :
1> Boot the system from any boot installation medium like a RedHad #1 CD-ROM or a Flash Drive, etc.
2> Use the linux rescue command as shown below at the installation prompt to enter the rescue environment:
1> Boot the system from any boot installation medium like a RedHad #1 CD-ROM or a Flash Drive, etc.
2> Use the linux rescue command as shown below at the installation prompt to enter the rescue environment:
Quote:
linux rescue
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3> Type the command below to mount the root partition:
Quote:
chroot /mnt/sysimage
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4> Type the command below to reinstall the GRUB boot loader, where /dev/hda is the boot partition.
Quote:
/sbin/grub-install /dev/hda
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*where
/dev/hda is the boot partition
5> Go through the /boot/grub/grub.conf file once again, as additional entries may be needed for GRUB so as to make any custom changes there (like controlling another installed operating system)
5> Go through the /boot/grub/grub.conf file once again, as additional entries may be needed for GRUB so as to make any custom changes there (like controlling another installed operating system)
Quote:
#vi /boot/grub.conf
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Step 6> Finally, reboot the system
Quote:
# init 6
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