LM 21? No, not yet, but it will be based on:

https://itsfoss.com/ubuntu-22-04-release-features/

"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
(...)
it’s more likely that Ubuntu 22.04 will feature Linux kernel 5.17."

Yrrah

Yrrah cited:
> "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

Apparently the point of that was a security issue w/ mounting:

> This is an upstream change designed to counter potential security
> issues with the OS-detecting feature (it mounts partitions to check
> for other OSes, this could be taken advantage of, etc).

The list of issues and separations that Mint has w/ its repo parent Ub
grows ever longer.

But, if MX can get along w/ its own strategy of separation from its repo
parent Debian, then I guess Mint can continue doing so w/ Ub.

I like/LUV the way Mint *doesn't* Ub; I'm supportive of every one of the
differences so far.

--
Mike Easter

On 1/12/22 2:19 PM, this is what Mike Easter wrote:
> Yrrah cited:
>> "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
>
> Apparently the point of that was a security issue w/ mounting:
>
>> This is an upstream change designed to counter potential security
>> issues with the OS-detecting feature (it mounts partitions to check
>> for other OSes, this could be taken advantage of, etc).
>
> The list of issues and separations that Mint has w/ its repo parent Ub grows ever longer.
>
> But, if MX can get along w/ its own strategy of separation from its repo parent Debian, then I guess Mint can continue doing so w/ Ub.
>
> I like/LUV the way Mint *doesn't* Ub; I'm supportive of every one of the differences so far.
>
>
>
I guess I'll have to look into how to get prober back into grub. I'm sure help will surface as 21 is out for release.

--
Linux Mint Cinnamon 20.2 64bit, Dell Inspiron 5570 laptop
Quad Core i7-8550U, 16G Memory, 512G SSD, 750G & 1TB HDDs

Big Al wrote:
> I guess I'll have to look into how to get prober back into grub.

Yes there are instructions for restoring.

The OMG Ub page has one and also a discussion of the 'conflict'.

> Thing is: disabling the disabling of OS prober isn’t an ideal fix
> given those aforementioned security concerns.
>
> Conversely, not having a GRUB boot menu with links to boot other
> installed OSes is a major downgrade on past behaviour
>
> It’s a tough situation. Ubuntu’s devs are considering whether to
> re-enable os-prober (“ugh”); to only run os-prober once, during
> install time (as other Linux distros do); or even creating a new GRUB
> module “that goes through the UEFI boot options and creates a
> submenu, then sets BootNext and resets the machine when you select an
> item”.
>
> There’s no easy option, so it’ll be interesting to see how this plays
> out ahead of Ubuntu 22.04’s arrival next spring. Being able to have a
> functional dual-boot is a big deal for many existing users as well as
> many prospective ones.
https://www.omgubuntu.co.uk/2021/12/grub-doesnt-detect-windows-linux-distros-fix

--
Mike Easter

Mike Easter wrote:
> The OMG Ub page has one and also a discussion of the 'conflict'.
>
>> Thing is: disabling the disabling of OS prober isn’t an ideal fix
>> given those aforementioned security concerns.
>>
> https://www.omgubuntu.co.uk/2021/12/grub-doesnt-detect-windows-linux-distros-fix
>
The comments section (91+) of that article are worth reading for the
discussion of the difference in how it (the problem or not) works for
UEFI vs non-uefi systems.

I was looking in there to see if anyone had come up w/ a boot parameter
solution.

--
Mike Easter

On 12.01.2022 at 16:32, Big Al scribbled:

> On 1/12/22 2:19 PM, this is what Mike Easter wrote:
>
> > Yrrah cited:
> >> "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
> >
> > Apparently the point of that was a security issue w/ mounting:
> >
> >> This is an upstream change designed to counter potential security
> >> issues with the OS-detecting feature (it mounts partitions to check
> >> for other OSes, this could be taken advantage of, etc).
> >
> > The list of issues and separations that Mint has w/ its repo parent
> > Ub grows ever longer.
>
> I guess I'll have to look into how to get prober back into grub.

It's already there. You only have to re-enable it in
/etc/default/grub... ↓

GRUB_DISABLE_OS_PROBER=false

.... and then run...

$ sudo update-grub

In Manjaro, Calamares will automatically enable the os_prober if it
detects Microsoft Windows or another OS during installation, and will
then also enable the GRUB menu.

If no other OS is detected during installation, then os_prober is
disabled and then the menu is hidden by default.

--
With respect,
= Aragorn