By default when an image is restored, Clonezilla will try to re-run grub-install from the restored GNU/Linux. If it fails, e.g. you are using i686 version of Clonezilla live, while the restored GNU/Linux is amd64 (x86-64) OS, it will fail. Then Clonezilla will use the grub2 comes with Clonezilla live to run grub-install. The version could be imcompatible. E.g. for older version of grub, the syntax is like:
search --no-floppy --fs-uuid --set 857d5af9-23cd-4d9b-908b-cc075e566738
On the other hand, the newer one is:
search --no-floppy --fs-uuid --set=root 857d5af9-23cd-4d9b-908b-cc075e566738
To solve this issue, you can:
- Boot the restored GNU/Linux
- Enter the command line
- Run the following command as root:
grub-install /dev/sdx
(Replace /dev/sdx with your harddrive, normally it's /dev/sda. You have to make sure the correct disk name otherwise you might write the boot loader on the wrong disk, and it might fail to boot.)
Then you can reboot the restored GNU/Linux again, and this warning message should be gone.
//NOTE// You can not run "update-grub" or "update-grub2" to replace the command "grub-install", because update-grub or update-grub2 will only update the config file of grub (/boot/grub/grub.cfg or /boot/grub2/grub.cfg). It won't update the boot loader.
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