[Raining Down in Texas]

I have an external Firewire drive that has some disk damage - it will not mount, and OS X asks to reformat it. It will not mount in OS 9 either. When I run OS X Disk Utility on it, the disk does show up and allows me to select it. When I click Repair DU reports "Invalid B-tree node size" and instantly says "Repair completed." However, the disk will still not mount, even after repeatedly attempting repairs.

Disk Warrior cannot see the disk, and will therefore cannot perform repairs.

I have tried two different Firewire cables, and have attempted to fix the disk with two different Macs.

Ironically, I just bought this disk a in July to back up data on my two Macs.

Any suggestions before I reformat the disk?

[Macola]

Have you tried this:

1. Boot into OS 9 (from either your HD or the DiskWarrior CD) with the Firewire drive unplugged.
2. Launch DiskWarrior.
3. Power on the Firewire drive, then plug it into your Mac.
4. See if Diskwarrior will now recognize the disk.

This always seems to work with my Firewire drives.

[Raining Down in Texas]

Originally posted by Macola:
Have you tried this:

1. Boot into OS 9 (from either your HD or the DiskWarrior CD) with the Firewire drive unplugged.
2. Launch DiskWarrior.
3. Power on the Firewire drive, then plug it into your Mac.
4. See if Diskwarrior will now recognize the disk.

This always seems to work with my Firewire drives.

Thanks for the tip. Unfortunately, I can't test it now since I wiped the drive - I found all the files I needed on a CD-based Retrospect backup I had made a month or so back.