I have installed Ubuntu with Wubi on a Windows XP partition (/dev/sda1). I had an Ubuntu install (8.04) which failed to upgrade on /dev/sda2. But now, I have three layers of boot managers stacked:
- old grub on MBR, gives me choice to WinXP or old Ubuntu
- windows boot selector (don't know its official name), gives me choice between real XP and new ubuntu
- new grub, list all the available systems.
I would like to install a fresh Ubuntu on another partition (eg. overwriting the old install, I got dedicated partitions for /home and do not care about wiping out the old install), which is easy enough when you have a CD. Problem is I do not have a CD and I cannot convince my BIOS to boot from a USB device.
I did a little search on this site and google, and asked the same question in french on ubuntufr, and this seems to be impossible. this question is close to what I am looking for but not quite, and I really find this limitation strange: I would think that it should be possible to install a complete system without repartitionning, then configure boot system to point to this new root.
Thanks for your help,