Difference between revisions of "GRUB/Restore the GRUB Bootloader"
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imported>Roland |
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= Overview = | = Overview = | ||
As with any Linux operating system, the GRUB ('''GR'''and '''U'''nified '''B'''ootloader) is responsible for booting up Manjaro. If for any reason your GRUB is not working - perhaps due to being corrupted, mis-configured, or even deleted - then it may not be necessary to reinstall Manjaro. '''The GRUB can instead be fully repaired and restored, retaining your installed Manjaro system'''. | As with any Linux operating system, the GRUB ('''GR'''and '''U'''nified '''B'''ootloader) is responsible for booting up Manjaro. If for any reason your GRUB is not working - perhaps due to being corrupted, mis-configured, or even deleted - then it may not be necessary to reinstall Manjaro as a consequence. '''The GRUB can instead be fully repaired and restored, retaining your installed Manjaro system'''. To undertake this task, you will need to use your Manjaro installation media (e.g. CD/DVD or USB Flashdrive). | ||
= Boot the Manjaro Installation Media = | = Boot the Manjaro Installation Media = | ||
'''1.''' Insert and boot your Manjaro installation media | '''1.''' Insert and boot your Manjaro installation media. | ||
'''2.''' Select your '''preferred language''' (F2) and '''keyboard layout''' (F3). | '''2.''' Select your '''preferred language''' (F2) and '''keyboard layout''' (F3). | ||
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mount /dev/'''sda1''' /mnt/boot | mount /dev/'''sda1''' /mnt/boot | ||
{{note| | {{note|Again, if you have not used a seperate boot partition, then it (obviously) does not need to be mounted!}} | ||
'''3.''' Change to the root directory of your mounted partitions | '''3.''' Change to the root directory of your mounted partitions. This is undertaken so that you are working from - and with - your installed system, rather than the installation media. To do so, it will be necessary to enter a series of commands in the following order: | ||
mount -t proc proc /mnt/proc | mount -t proc proc /mnt/proc | ||
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'''4.''' Install mtools and os-prober. mtools is a collection of tools to access Microsoft Operating Systems. os-prober is a utility that detects if there are any other operating systems present. Install them with the following command: | '''4.''' Install the software applications ''mtools'' and ''os-prober''. mtools is a collection of tools to access Microsoft Operating Systems (i.e. MS-DOS). os-prober is a utility that detects if there are any other operating systems present. Install them with the following command: | ||
pacman -S mtools os-prober | pacman -S mtools os-prober | ||
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= Restore the GRUB = | = Restore the GRUB = | ||
'''1.''' Install a new GRUB bootloader | '''1.''' Install a new GRUB bootloader with the following command: | ||
grub-install /dev/sda | grub-install /dev/sda | ||
'''2.''' Recheck to ensure the that installation has completed without any errors | '''2.''' Recheck to ensure the that installation has completed without any errors: | ||
grub-install --recheck /dev/sda | grub-install --recheck /dev/sda | ||
'''3.''' | '''3.''' Finally, configure the freshly installed GRUB bootloader: | ||
update-grub | |||
or manually with | |||
grub-mkconfig -o /boot/grub/grub.cfg | grub-mkconfig -o /boot/grub/grub.cfg | ||
All done. Now you can close the terminal and reboot your system for the change to take effect. | |||
= Troubleshooting = | |||
=== Arch Linux is not recognized === | |||
If Arch Linux wasn't recognized after an update-grub then probably your Arch installation is missing the package lsb-release. | |||
[[Category:Troubleshooting]] | [[Category:Troubleshooting]] | ||
[[Category:Contents Page]] | [[Category:Contents Page]] | ||