[sf-lug] problem with Grub

[Bobbie Sellers]

On 1/12/22 16:48, Akkana Peck wrote:
> Bobbie Sellers writes:
>>>> Ubuntu 22.04 LTS will have Grub bootloader version 2.06 but there is a
>>>>   problem with it. It has os-prober feature disabled by default.
>>>>
>>>> This means that if you are on a dual boot system, Grub won’t probe
>>>> for other operating systems and thus it won’t list Windows (or other
>>>> OS) in Grub.
> 
> Ubuntu's os-prober was broken as far as detecting Linux
> installations anyway (supposedly it works for Windows). When I tried
> to file a bug on that,
> https://bugs.launchpad.net/bugs/1912677
> I was told:
> 
>      Running two *Ubuntu installs on the same system is not really
>      supported, as there can only be one grub installed.
> 
>      Same for os-prober really, it doesn't really work correctly for
>      anything other than Windows.
> 
> After reading that, I gave up on Ubuntu's grub entry
> generation and switched to writing my own grub cfg.
> I put it in /etc/grub.d/09_local so it runs before 10_linux
> or 30_os-prober, and the last entry is:
> 
> menuentry " --------- AUTOGENERATED CRAP BELOW ----------" {
> echo "(just a separator)"
> }
> 
> So when I boot, all the (mostly broken but a few might work)
> entries from os-prober go below the line, and I can try them
> in emergencies if my entries stop working.
> 
> (I've since switched back to Debian; I haven't investigated whether
> Debian's os-prober is similarly broken, since my 09_local has been
> working fine.)
> 
> Speaking of grub problems: has anybody managed to get a custom
> background image working in grub on UEFI? I've tried everything I
> can think of, read all the docs I can find, tried installing the
> grub-splashimages packge, but nothing has worked, and none of the
> docs addresses details like, if you put a background_image entry
> in a grub config, what filesystem is that relative to, so where
> should you put the image on the running system so that grub will
> see it at the next boot? Background images used to work on MBR
> systems.
> 
>          ...Akkana
> 

	I do not use Ubuntu but on PCLinux Grub was sorking satisfactorily  a 
year or two back before COvid-19 both for
other Linuxes and for Windows.

	I consider Ubuntu to be the problem with it propensity
to ignore historical partition assigments in favor of /(root)
and /home being on the same partition at least in the few examples
of Ubuntu which I have been asked to help with.

	PCLinux seems to be working in the background and images
department.  I use SDDM and change splash images as the mood hits.

	Bobbie Sellers