About a week ago, I decided to add some new music to my 4G click-wheel (40 GB model). I placed the iPod in the dock and waited for the appearance of iSync and iTunes. And neither appeared. The iPod did not mount. Took the iPod out of the dock and put it back in. Still no joy. Checked all cables and connections (FireWire in my case) and nada.
I'm running 10.3.6. and iTunes 4.7, plus latest updaters for iPod on a MDD 1.25 ghtz G4.
So I ran the Apple Hardware test and it reported a problem with my FireWire bus. (I have no other FireWire peripherals.) The diagnostic suggested that I read over my warranty information and get in touch with AppleCare.
So I went to the Apple website in search of a link with which to do this. Decided to check the Knowledge Base and, lo and behold, I found an article about FireWire problems. The article suggested that I shut down the machine, disconnect the power cord and all peripheral inputs EXCEPT for the FireWire line, and wait at least five minutes and then reconnect everything and then boot up.
I followed this procedure and the FireWire bus came back up. iPod mounted normally and has done so since. No explanation in the article as to what causes this or how the fix works, but it did work.
Firewire is too bizarre to live. It reminds me of SCSI.