20.04 autoinstall and "not" destroy the partiions

[Tom H]

On Fri, Feb 5, 2021 at 1:12 AM Jerry Geis <jerry.geis at gmail.com>
wrote:
>
> So what storage structure would I use to "not" destroy the
> hardisk.
>
> sda1 has /  (ext4)
> sda2 has sawp
> sda3 has /home (ext4)
>
> I was trying to do that with install tool, let it install and look
> at the /var/log/installer/ files to see what storage it used - but
> it wont let me say "keep" sda1 - its ghosted.

Like for any other installer, you have to carve out partition(s) (or
LV(s) if using LVM) manually or using "early-commands" or "%pre"
before installing.