On 13/03/2024 at 16:18, Dr. Tilmann Bubeck wrote:
Yes, thats exactly the use case: I always have multiple linux installations (ubuntu and fedora) in two seperate partitions. To stay compatible with their individual kernel and grub updates, I always install a second GRUB into the root parition of the specific linux installation. In MBR I have a master GRUB to select the linux system (partition) to chainload the second GRUB of that distribution. For this use case I need GRUB to be installed into ext4 of the root partition of that linux system.
Alternatively, the primary GRUB can load a secondary GRUB core image file /boot/grub/i386-pc/core.img with the "multiboot" command to avoid relying on block lists.
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