1) Install Ubuntu on the /(root) partition, and mount your /home partition as /home2
2) When the installer has finished, BEFORE restarting, edit /media/[partition]/etc/fstab to change the home partition to be mounted as /home instead of /home2
3) Delete the current /media/[partition]/home directory, and move the empty /media/[partition]/home2 in its place
4) Restart
This should load up Ubuntu with a clean install and existing home partitions.
Work around:
1) Install Ubuntu on the /(root) partition, and mount your /home partition as /home2 [partition] /etc/fstab to change the home partition to be mounted as /home instead of /home2 [partition] /home directory, and move the empty /media/ [partition] /home2 in its place
2) When the installer has finished, BEFORE restarting, edit /media/
3) Delete the current /media/
4) Restart
This should load up Ubuntu with a clean install and existing home partitions.