On 23/01/2025 at 00:07, M. Dietrich wrote:
after installing a debian from recently downloaded iso the system boots fine into grub but gets stuck in the grub command prompt.
This is Ubuntu's leftover GRUB booting and failing to find its deleted boot/root partition, not Debian's GRUB. You could have checked cmdpath/fw_path with "set" at GRUB prompt.
i installed debian in the same partition where previously ubuntu was installed but did not know about additional files for efi in partition 1. after some investigations i found that there was a leftover from the ubuntu installation in directory /boot/efi/EFI/ubuntu
And not in /boot/efi/EFI/BOOT ?
efibootmgr showed values that seemed to be fine (while there was an ubuntu entry) and BootOrder pointed to the debian Boot entry.
What does this mean exactly ?
after removing that ubuntu directory grub works fine. i dont know if it was just my mistake not to delete that dir when wiping ubuntu from the system or the debian installer should notice that or
Notice what ?
grub should not screw up when its not configured to take that dir into account.
GRUB did not screw up. The UEFI firmware just booted the wrong GRUB until you deleted it.
