On Thu 13 Apr 2023 at 14:39:18 (-0600), Charles Curley wrote: > On Thu, 13 Apr 2023 13:57:04 -0500 > David Wright <deb...@lionunicorn.co.uk> wrote: > > > https://lists.debian.org/debian-user/2023/04/msg00405.html > > > > I was left with a system whose Grub menu only contained entries for > > the new system, because os-prober no longer scours all the other > > partitions for OSes any more.ยน To get back to booting bullseye by > > default, the easiest way was to boot bullseye the once, and then run > > install-grub /dev/sda.
Don't let me leave you with the impression that this was unexpected, or of concern to me. And the way I dealt with it was offered here to illustrate why the OP does not +need+ their kernel/initramfs backups to be mixed up with the originals in /boot/grub, or for Grub's menu to include them as a separate menuentry. Also bear in mind that the post cited, on bookworm RC1 installation, was to replicate the one made by the OP of that thread (right down to using a BIOS/GPT system), and elicit a response with more information (not forthcoming) on their "bug". > I believe the preferred way to get back to including other OSs in > grub's menu is to enable the OS prober by adding the following (if > necessary) to /etc/default/grub, un-commenting the last line, and > running update-grub. Yes, and in my footnote, I showed that you can, if you want, get the other OSes back /before/ the first reboot, remembering that that file is mounted on /target while the OS is being built by the debian-installer. > # Uncomment this to run os-prober to search for and add other OS > # installations to the grub boot menu > #GRUB_DISABLE_OS_PROBER=false All present and correct in RC1. Cheers, David.
