Somehow, somewhere along the way I've managed to screw up the Leopard install on my Quicksilver. I know I should have backed up, but didn't, so I'd really like to get it going again. As best as I can tell, everything is intact, it just won't boot. Sometimes, it will hang at the gray screen with the progress indicator spinning. Other times, it will boot to a blue scree with a cursor, but the login prompt never appears. Booting in safe mode does not change anything. I think I can safely rule out a computer problem-it boots to Tiger just fine, as well as when I put my Powerbook in TDM and boot off the Leopard install on its hard drive. I've tried repairing the disk and repairing permissions from Diskutility when booted from the Powerbook. I've also been able to successfully boot into single user mode. I've run fsck from single user mode a couple of times. Generally, it will report that it made modifications the first time it is run. In accordance with how I understand to use this tool, when I run it a second time it reports the file system as fine. Rebooting gets me back to what's described above. As I said, I really want to preserve this Leopard install for a variety of reasons. Is there anything else I can do to try and fix this? Failing that, is it possible to use the Leopard install disk(which I have, but not with me at the moment) to do a "repair" install that will basically keep everything as is but fix the underlying problems?