Ubuntu Backup of MBR / Grub Config


I have a dual boot Windows 10 / Ubuntu system. I have Windows installed one drive C: a second data NTFS parition on Drive D: the second hard drive. for the remaning logical drives on that disk I have Ubuntu. Sorry I cant remember the exact term.

Anyway I know with clozilla I can backup partitions and disks. My question is there a way I can backup just the MBR and Grub config. So I can keep my windows and ubuntu backups seperate. Or is the only way to get the Grub info to backup the C: partition / drive.

Also where is the Grub config stored?


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You can always chroot into your broken Ubuntu and reinstall the GRUB, read more about that here:

Please note that the following commands can be pretty dangerous so be aware of what you are doing !

However here is what you can do:

Get a backup from MBR:

sudo dd if=/dev/sda of=/home/user/mbr bs=512 count=1

Get a backup from files within the /boot directory. It's not really necessary, you can only get a copy of /boot/grub/grub.cfg it's the file containing the menu entries etc..

Note that /dev/sda is the first hard disk where my grub has been installed on for you it might be  /dev/sdb or something else.
When ever you break your system's GRUB (Mostly because of a broken MBR), you can easily boot into a Live system and restore your MBR using:

sudo dd if=/home/usr/mbr of=/dev/sda

And voila your MBR with a working grub is back. You can also use your backup from /boot to restore anything else that might be corrupted.


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