Re-enabling os-prober for live images?
Hello Debian Developers
Since the grub 2.06 upload, os-prober is now disabled by default. This
means that other operating systems are no longer detected and added to
grub by default in Debian 12.
This makes some sense, since mounting foreign filesystems and reading
files on them, extracting some text and using it as variable in shell
scripts could well be dangerous if those foreign filesystems are
infected with malware that takes advantage of this.
However, I'm not sure this is a good default for Debian Live at this
time. Many people who install from Debian Live are dual-boot users, and
currently, they'll have to do an additional step that's relatively easy
for any system administrator, but far more complicated than any other
step to configure Debian at that point (edit a file as root and then run
update-grub, and, they'll need to know that they need to do this).
Julien posted about this on ubuntu-devel a while back too:
https://lists.ubuntu.com/archives/ubuntu-devel/2021-December/041769.html
I haven't followed further on to which solution they went with, but
since it's so late in the development cycle, wouldn't it make sense to
enable os-prober for Live systems for Debian 12, and then look at some
of the better solutions (like only probing at install time, and keeping
a cached results for grub) for Debian 13?
-Jonathan
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