At 7:53 PM -0800 1/2/2012, Kevin wrote:
Recently I have not been able to access a partition on a Firewire hard drive. When I click on the icon for the partition on my desktop or in the devices list in the sidebar of the Finder, the Finder seems to blink and all of the icons on the desktop as well as the finder bar up top all disappear for a second and then comeback

Finder is crashing and launchd is automatically restarting it for you.

Check for crash logs.

Check your system.log for error messages pertaining to that particular volume.

I can see the drive in Disk Utility and System Profiler. Disk Utility says it is fine when I repair it.

I'm guessing you mean that those tools can see the ***volume*** (partition), and not just the whole drive itself? And that you've repaired the ****volume****?

This is telling:

That the other volumes (partitions) are working means the disk itself is working well.

That Fsck, the actual Unix tool for which Disk Utility is a basically a GUI, is happy with the borked volume means that that volume's file system data structures are probably ok. But then Finder and apps die when you actually try to access the volume... try to access a specific directory (even if it's just the top level root)... means that there is a corrupted directory or index therein. IOW, the filing cabinet is fine. The drawers in the filing cabinet are fine. The problem, most likely, is that one of the hanging folders, in that one drawer, has exploded. Hopefully it did so without destroying the files therein.

First, try turning Spotlight's indexing off on that volume. If that doesn't help, then try mounting the volume read-only and see if you can make a complete backup, then dismount the volume, erase it, and reload it.

Turn off Spotlight's indexing with this command:
sudo mdutil -i off /Volumes/fooVolume

Replace "fooVolume" with the name of your disk volume. If the name includes any special characters then enclose the whole name in doublequotes (eg: "my Stuff"). Not that the command is case sensitive.

The directions to mount the volume read-only are here:
http://support.apple.com/kb/TA23941

I've restarted, shutdown, disconnected and turned on and off the FW drive. Started with the drive on and connected. Started up in Safe mode. Reset PRAM. Nothing. Repaired permissions on the Mac HD, deleted com.apple.finder.plist and still nothing.

This is the equivalent of mucking around with your car's engine because there's a stink on one side of the trunk. The rest of the trunk seems ok. You just need to find the decaying mouse. Perhaps check under the spare tire.

The machine is a 2010 Intel Core 2 Duo Mac Mini running SL 10.6.8 8GB RAM. It also afects my 17 " 1.5Ghz AL G4 Powerbook running Tiger 10.4.11 with 2 GB RAM.

On that machine it actually makes the Finder Icon and title bar blink infinitely without letting me do anything except disconnect the drive after which all is well.

The drive is a 500GB Seagate 7200 rpm OWC Mercury On The Go 2.5" ATA in a FW800/USB2 enclosure connected via FW800. There are 3 180GB partitions. The drive is 2 years old. I'll be contacting OWC in the morning.

In the future please put the hardware and OS informations at the TOP of the message. That way we don't have to peruse through the whole message to find that data, then go back to the top to re-read the problem description. Emails should NEVER have GOTOs.

HTH,
- Dan.
--
- Psychoceramic Emeritus; South Jersey, USA, Earth.

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