Hi David > Sent: Monday, July 05, 2021 at 4:52 AM > From: "David Wright" <deb...@lionunicorn.co.uk> > To: debian-user@lists.debian.org > Subject: Re: How do I get back the GRUB menu with the blue background? > > > I find the Grub installation prompts in the d-i very confusing. > I'm wondering whether your process incorrectly updated grub.cfg > in the ESP on the SSD. >
I suspected it too because when I installed Debian Testing, I didn't delete both the ESP and /boot partitions that were created by Debian Buster. As a result, after installing Debian Testing successfully and rebooting my machine, there was no blue GRUB menu. > Bear in mind there are two grub.cfg files. Where are their locations? > The > second one is the familiar one, so I just give the head: > > # cat /boot/efi/EFI/debian/grub.cfg When I issued the above command at the grub> prompt, the response was 'file /boot/efi/EFI/debian/grub.cfg' not found. > (I only encrypt /Home and swap.) I'm wondering whether your first > grub.cfg is pointing to the USB stick that you used in the > installation. That would be simple to check. No. If you're using UEFI and the partition table scheme is gpt, Debian 10's installer detects that your SSD is using EFI, there's a message on the screen that asks "Force EFI installation to a removable media? Yes or No". My response is always "No". > > If this guess, is correct, it might be possible to confirm it > if you get these symptoms: > > . Booting with the internal drive only: GRUB> prompt. > . Booting with the USB stick inserted: something else appears, > a blue Grub menu, or a Debian installer splash screen, > or even Windows. I did what you suggested by first inserting the USB stick that contains Debian 10's installer and booting up my machine. There's no blue GRUB menu, whatsoever.... > > Of course, the second scenario can only work if the USB's UUID > hasn't been recreated by further uses. Yes, I'm aware of that fact.... > > ยน With encrypted systems, you have to bear in mind what can be seen > outside and inside the container. This is easy to distinguish > with only /home encrypted, as you can inspect things with the > normal system tools. My LUKS-encrypted partition consists of / and swap area. I assume the / contains /home, /var, /usr, etc... Best wishes.
