[SWLUG] Ubuntu 64 bit and 32 bit installations

[Marcus Davage]

I've just got a new PC (AMD Quad core 12GHz, 8GB mem, 1TB hd) and
partitioned it with LVM, thus:

$ df -h

Filesystem                  Size  Used Avail Use% Mounted on
/dev/mapper/vgrp000-boot64   46G  5.1G   39G  12% <not used>
/dev/mapper/vgrp000-boot32   46G  5.1G   39G  12% / <ubuntu 9.10 32bit>
/dev/mapper/vgrp000-var      46G   16G   29G  35% /var
/dev/mapper/vgrp000-home    724G   93G  595G  14% /home
/dev/sda2                    92M   37M   51M  42% /boot
/dev/sda1                    49G   13G   37G  26% <Windows XP>

I'd like to be able to install Ubuntu Server 64-bit onto the boot64 LVM
partition, but when I try and install and *not* use /var or /boot, it
says it's going to overwrite everything in them.

Now, I *could* back them up and restore them afterwards, but Jaunty uses
Grub2 (which is as yet black magic to me, not using menu.lst), and I'm
afraid I'll lose my Ubuntu 32 (which is the default OS) or overwrite the
new Ubuntu 64's grub entry.

Any suggestions, anyone?

Marcus