I've left the broken Ubuntu system sitting there on /dev/md1 and installed 6.10 on /dev/md0. Main problem with that (I very nearly gave up) was that the Ubuntu installer assumes that it's going to be booting from (hd0,0), despite the fact that you tell it where root is (in my case (hd0,5) since /dev/md0 is made from /dev/hda6 and /dev/sda6).
This solves the boot error "Error 17: Cannot mount selected partition" God I hate grub. Even it's error messages fail the basic rules (report the error with enough detail to make it clear: "Error 17: Cannot mount selected partition 0 as root"), let alone report that it's misconfigured before letting you (try to) reboot. Anyway, once I'd done that, it actually booted. Now I just have to reinstall and reconfigure all the apps I'd set up. Sigh. luke -- SLUG - Sydney Linux User's Group Mailing List - http://slug.org.au/ Subscription info and FAQs: http://slug.org.au/faq/mailinglists.html
