Sorry, I don't have the means to try to repro this any longer; as a workaround, I removed the partitions which caused this. The hard disk now has a regular Dapper installation which does not thrash.
The hard disk had been in use on a different computer, I guess probably with different hard disk geometry, so it could be that the image was just invalid for this BIOS (but I obviously? don't know what I'm talking about here, just speculating). -- LiveCD thrashes if hard disk malformatted https://launchpad.net/bugs/60517 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs