On Fri, 23 Jun 2023 16:31:55 -0400 bud <budheal...@gmail.com> wrote: > Package: grub2 > Severity: important > File: grub2 > X-Debbugs-Cc: budheal...@gmail.com > > Dear Maintainer, > > * What led up to the situation? > I installed the 2023-04-24 weekly build, downloaded the 2023-06-05 build and used that as the jigdo base to download bookworm 12.0.0 > Then I added the 21 DVD images and synaptic suggested adding the online main repository. After apt-get update --allow-insecure-repositories, I rebooted. > * What exactly did you do (or not do) that was effective (or > ineffective)? > The computer booted into bookworm. However, the existing option to boot Windows is no longer available. Looking in the Advanced options finds the prior Linux entry. > > Compare Bugs #1033985, #1008294 and #250626 > > * What was the outcome of this action? > Without a Windows option, there is a suggestion in bug #1033985 that os-prober will help set me reset the grub list. Otherwise, the Windows DVD will contrarily erase grub. I only added a Linux partition to this laptop to investigate a HDMI bug, as this one has HDMI, VGA and DisplayPort connectors. > * What outcome did you expect instead? > Just because the Linux kernel has been updated, any existing entries should not be erased - except for the one being replaced. > > An update should not erase the settings the user or administrator has added to customize the system. This looks like a bug.
I just wanted to add my 2p to this as I have just had the same experience - I have just updated my Linux installation, and rebooted to find that my Windows installation is no longer available. I had to go and look up GRUB_DISABLE_OS_PROBER, find it in /etc/default/grub, then change it, then run update-grub, then reboot again. It's fine to change the default behaviour, but it's not fine to remove OSs that are already configured in grub before the upgrade. This is definitely a bug. CC
