boot-repair

seems like a good idea for a project, but all it tells me is to paste "_label9" into a terminal after wiping grub off my computer.

Unglaublich, wie schnell dieses Tool das Bootproblem repariert hat! Obwohl der Download nicht mehr aktuell ist, wurde während der Nutzung das Update installiert (in Sekunden) und problemlos ohne Unterbrechung weiter „gearbeitet“! Danke! Mein Wochenende ist gerettet!🙏🕺🏾

I'm really grateful, it's saved me many times, but often I'll forget about it from the shock and joy of surviving it (because it's already in my system), so I wanted to express my gratitude today.

The tools gives me detailed and accurate information about all OS and partions. It lets me publish the data to a pastebin. But ultimately fails to actually repair the system boot with this message: "Please enable a repository containing the [grub-efi] packages in the software sources do Debian GNU/Linux 12 (bookworm)(/dev/sdb2). Then try again." I could not find such a package but it turns out that grub-efi is already installed on my system as part of another package. Posting about this error in the Debian installation forum yielded no usable result. A google search shows that others encountered the same error -- none of them got a resolution that would allow the boot-repair utility to succeed.

Fabulous : how many did this tool help me recovering the disk architecture :-)