How-to: GRUB - Install Grub on several disks!

How-to: Install Grub on a several disk.

Install Grub on several disks, for example, if there is no more space on the primary hard disk or for other reasons.

Step 1: Reconfigure grub

With a dpkg-reconfigure you could you can perform the configuration again.

dpkg-reconfigure -plow grub-pc

Step 2: Choose the storage

If preconfigured files are available, these can be accepted with “Ok” using the Tab and Return keys.
The correct storage can be selected with the Arrow keys and the Space key, then confirm the installation again with Tab and Return.

For example, it would look like this:
1st. Picture
Screenshot from 2024-03-11 13-46-31

2nd. Picture
Screenshot from 2024-03-11 13-58-53

Step 3: Reboot the system

After the reconfigure is successfully done, just reboot the whole system.