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Totally stuck
Authored by: ParadisePete on Jul 02, '07 09:41:58PM

Nothing I've tried solves the problem. I've tried the USB probe, and I've followed the macfixit instructions on how to use the IOHIDFamily.kext and the IOUSBFamily.kext from 10.4.9.

Then I tried the 10.4.8, as per their "backup" suggestion. No dice. It knows it's out there, but it won't mount it. Nor can I mount flash drives. All other USB devices work fine. Even connecting my digital camera works.

What's even more annoying is that Windows under Parallels mounts the flash drive with no problem, and also tries to mount the hard drive, failing only because of the format.

I have a bad feeling that because of the holiday it's going to be a while before this gets fixed, and will seriously hamper my work-flow.

I've been using Macs since before they introduced the 512k "fat" Mac, and this is the first time I've been burned by an update. I can understand it going wrong, but I don't understand why it isn't a high priority fix. Maybe the phone got in the way.

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Totally stuck
Authored by: wallybear on Jul 03, '07 03:06:57PM
In one of the iMac i fixed installing the two 10.4.9 kext, I also had to clear the caches, or the USB drive couldn't be mounted.
An easy way to clear all the caches is AppleJack (, that has an option to do that. Clear caches and user caches when prompted.
old kexts + cache deletions revived the drive.

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Totally stuck
Authored by: ParadisePete on Jul 04, '07 02:33:19PM

Hey, success! Thanks Wally.
For completeness, and anybody still stuck, here are the steps I took:

- Download the 10.4.9 combo update
- Download Pacifist
- Download and install Applejack
- Mount the combo update dmg
- right-click on the update package and select open in...Pacifist
- In Pacifist, navigate to >System>Library>Extensions
- Scroll down to IOUSBFamily.kext
- Right-click and Install to Default Location
- Agree to replace any files it asks about
- Repeat with IOUSBMassStorageClass.kext
- Restart the computer, holding down Command-S as it's starting
- You'll get a black screen with text. Type exactly: applejack AUTO restart
- If you want to, you can now skip the first two operations
- The third step cleans the caches. Don't skip that.
- You can quit at the next prompt, then restart

Let the computer restart normally. You should, with luck, again have access to your USB drives.

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