Agree with both Lisbeth and John Griffin on this. First attempt to fully backup before attempting to use DiskWarrior. I am not a huge fan of TechTool Pro except for identifying hardware issues but couldn't and wouldn't try without DiskWarrior. After Apple's Disk First Aid, a and then a separate DVD boot disk repair, DiskWarrior is the next arrow out of the quiver. It has *always* fixed every problem that other software utilities couldn't. It needs to be run off any firewire connected Mac or bootable DVD for your Mac. Granted, I am ALWAYS fully backed up with scheduled daily/nightly mirror backups of all my systems. "What's the difference between a car crash and a HD crash? With a HD crash, you know you're dead!" I learned a valuable lesson after a close call with a HD failure. Years ago, (Nov.1988) when a 60MB SuperMac external SCSI drive (yes that was 60MB not GB) started acting flaky and had to return it for warranty coverage. The drive via a Mac SE (with two floppy drives) had been religiously and fully backed up with the use of *85* floppy disks. Well, it had grown to 85 floppies (800K disks) with its dynamic sized backup. I used an early DiskFit program which was a forerunner to Retrospect. The warranty SuperMac drive returned completely replaced, formatted and devoid of *any* of my previous data. I sat down and ran DiskFit and fully restored the HD with those 85 (800K) floppies. That close brush with disaster forever burned the backup - BACKUP mantra into my mind. Also realized how fortunate I was with not one floppy failing when needed. And we all remember how notoriously unreliable floppies could be. I did use Sony and TDK floppies and they were the best quality of the day. If you can't backup or don't have access to serious and more expensive data recovery software. Don't erase (reformat) your drive without using DiskWarrior. As many of us know it creates a new directory and doesn't attempt to fix the old one. It is marvelous software from Alsoft. http://www.alsoft.com/DiskWarrior/ read the reviews on their site and directions for use. Apologize about the "memory lane" backup story but got feeling melancholy. Must be the approach of fall. And finally... Good Luck! Rod > >I have nothing against DiskWarrior or Techtool, >but I would not use any of them on a failing >disk until I had done recovery effort for data I >don't have a backup for. > >SubRosaSoft <http://www.subrosasoft.com/> >Data Rescue II <http://www.prosofteng.net/> > >Lisbeth ><http://homepage.mac.com/holisticum/> updat 050215 ><http://www.got-a-mac.org> medlemssida för Got-a-Mac (Mug in Gothenburg)