On Thu 17 Jul 2025 at 12:42:29 (+0200), Flo wrote: > I tried to reinstall: This time I said guided partitioning the whole > disk but it only creates a 1M partiion for biosgrub and a big one > (3TB) for everything else (+ swap). I have EFI enabled in BIOS and > it's not the first time I install Debian on this machine and it > created a EFI partition last time. Also when I chose the use of the > partion, there is no entry with EFI or ESP. > > For me it looks like that the installer thinks that I am on a non EFI > system?
That's a very simple thing to answer: if you're in EFI mode, there will be a directory /sys/firmware/efi/efivars/ with files in it. In BIOS mode, there won't. In the installer, you'll need to open a shell with Alt-F2 and take a look. > PS: the keyboard & mouse problem disappeared after another reinstall, > but booting is only possible over the BIOS menu. Like John Doe, no idea what this means. Cheers, David.

