Mounting Disk Image Locks External Drive

ScottW

Founder
Staff member
Okay... I've been busy working on secret plans and I really want to make some backups and this issue has stumped me and I haven't had a lot of spare cycles to dig deeper.

I have an external 400GB drive, that is in three partitions. On one partition, the largest 200GB, I have three dmg files created with Disk Utility that store backup images of my systems.

The problem is, I can no longer mount those images. When I double click on them, it acts like it launches them and then lock up. I can't access any other partitions on that drive. I can do other (non-file system related) activities while its locked up. After a few minutes, it will flash "Smart Failure" referencing S.M.A.R.T. on the drive (the ext drive has a LCD display).

Eventually, to regain access to my file system, I will have to unplug the firewire cable and that will unlock any hanging and system returns to normal. Plugging the cable back in with a power on/off of the extra drive will yield all three partitions mounted. I can copy files to that and other partitions on the drive, and copy files from it. I even tried to create a 100GB read/write disk image (not sparse) and a hour or so later, it was complete, 100GB file created. No errors.

I have run Disk Warrior, Drive 10, Disk Utility and the drive is solid. Running SMART diagnosis on the external drive enclosure yields all is fine. I have two disk images on that partition, one is 80GB and the other is 21GB. Without purchasing another external case, I don't have enough room to copy these to my laptop drive to see if they will mount. A small 37MB disk image copied from that partition to another partition does mount.

What in the world is causing this thing to choke. It makes no sense. If I had availability to copy those images to another partition, then I'd just reformat that partition and see if that fixes it. But, I'd like to get to the bottom of it if I can.

Any ideas, suggestions?

Running the latest OS X on a Hi-Res PB 17, PPC.
 
No ideas?

I did some tests this weekend. It appears I can take a known good Disk Image (DMG) and copy it to that partition, and it will copy fine, but when you double click on it, same result... it just hangs.

Im looking for other drive solutions to get data off this drive before I attempt a reformat. Although, I am not keen on using the drive, even if it appears to work. Maybe I will just install Windows on it, so if it blows up, nothing is lost. ha!
 
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