I seem to have lost nothing.Īlso I didn't need to run terminal from install disk. So, using the unmount command in terminal responded with a 'could not be found'.ĭo not let that prevent you from running fsck_hfs -r command as it still worked for me.

My difference was that the machine would not mount the HD at all. The fix pretty much worked for me as originally posted. By the way, TechTool Deluxe (3.1.1) didn't find the Catalog problem for some reason (you'll have this on a CD if you have AppleCare), which is why I resorted to fsck. Hope this helps someone so they don't buy a program that's going to do pretty much what we did with fsck_hfs, and so they don't waste time searching for an answer to no avail. Just for fun, you might want to run another fsck_hfs on your disk (use the -f option because your drive is probably journaled). Go back and umount the right thing and repeat this step. If you umounted the wrong thing, it will complain that you can't repair a mounted drive. Type umount /dev/disk0s2, replacing disk0s2 with whatever disk your OS lives on.Type df and look for the drive that has your Mac system mounted-you'll have to unmount this.The installer will load up, go to Utilities in the menu and run Terminal.Boot off the OS X CD (reboot, hold C while booting).Knowing that OS X is built on Unix gave me a few clues on how to proceed. I searched the web and Apple's site, and couldn't find anything useful except to buy DiskWarrior or reformat the drive. Just recently I ran into a problem when I tried to Verify my hard disk and when it tried to verify the catalog, it responded 'Invalid sibling link.' Repair Disk didn't work.

Mac volume could not be unmounted