Apple seem to have got this one wrong. People have been reporting problems with:
- USB mounting
My annoyance has been my PVR-500r video recorder not mounting. I can bear the once that WiFi stopped working.
- Podge it by launching the USB Profiler provided in developer tools
- Delete the kernel cache files: com.apple.kernelcaches (a folder in /System/Library/Caches); Extensions.kextcache (a file in /System/Library); and Extensions.mkext (a file in /System/Library/)
- Reapply the update using the combo updater rather than the delta.
The first two didn’t work for me; the combo updater is downloading now.
And that didn’t work either, including resetting PRAM.
Fortunately, it mounts on my CEntOS workstation. Linux has come on.