22.04 reducing iso size

[Jerry Geis]

Hi all - Trying to reduce the size of 22.04 iso such that I can "remotely"
issue commands to replace the OS, it reboots, downloads the iso in ram and
installs, reboots and now Ubuntu and not CentOS.

I am using the hwe kernel - so first I remove all kernel files no hwe
(initrd and vmlinuz) basically

I took a huge stab and just removed /pool - this seems ok - did a couple
tests and the install works (it seems).

This gets me down to 1.3M in size. Still just slightly too much.

After looking at remaining files all there is that I can make a BIG stab at
is
ubuntu-server-minimal.ubuntu-server.installer.squashfs

it has /usr/lib/firmware

I will not be using any wireless devices - so I think I can remove that.

Is this a "viable" strategy to pursue ? if so the file goes from 473M down
to 95M.

Will this work if I correctly remake the squashfs ?

Thanks

Jerry
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