how to integrate an old installation in Grub and startmenu

[Liam Proven]

On Mon, 13 Sept 2021 at 13:49, Robert Heller <heller at deepsoft.com> wrote:
>
> They are
> especially bad if you have a "shared" /boot FS (which you really should have if
> you are multibooting Linuxes)

I am sorry, but *what?!*

Sharing /boot between different distros?! That sounds _suicidal_.

BIOS_BOOT partition on UEFI/GPT, sure. But that is _not_ a /boot FS.

> and really bad when the "other" Linuxes are for
> a completely different distro (eg RedHat / CentOS).

I think my personal record is 7 different distros on a single hard
disk (alongside DOS *and* Windows). It's perfectly doable, but you do
need to know what you're doing and plan ahead.

I have successfully multibooted Mint + Ubuntu + Fedora + Arch + SUSE
on the same machine, for instance. Fedora and SUSE were both major
pains, though.

> It also gets confused if
> you are using LVM and have Linux VMs using LVM volumns for their disk space.

*Everything* gets confused -- and confusing -- if you use LVM, which
is why I advise people not to.

Anyone who needs to ask for advice on things like multibooting should
not be using it, IMHO. *I* need to ask for advice regularly and I've
been doing this stuff for >30 years now.  I find LVM confusing,
intimidating and a pain.

I completely accept that there are many many people more skilled than
me who use it with aplomb. I am not an egomaniac.

But OTOH if it's on a server deployment, well, servers generally do
not dual-boot and probably shouldn't. Keep the recovery system on
another disk altogether. And these days you should probably be running
it under a hypervisor anyway.


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