For all those who have problems with their HDD and/or copying, loading songs, freezes etc, I suggest checking the diagnostics by following these steps:
- Temporarily return to the original firmware using iTunes. Check the opening post for instructions.
- Reset the iPod by pressing MENU+Select for ±5 seconds.
- When the Apple logo appears quickly press and hold the Select+Previous until the Diagnostics menu opens.
The information there can be very useful to check out the state of your Classic's hardware, especially that of the hard disk! (Diagnostics menu -> IO - > HardDrive -> HDSmartData ->
Reallocs) To understand what certain numbers actually mean you can check
S.M.A.R.T. on Wikipedia.
I suggest you run all tests, just to check if everything is working properly, afterwards you can blame Rockbox/EmCORE for something failing
Apparantly my Classic is still in good condition after all these years, and I have
never had any crash, freeze or USB problem at all since EmCORE r859 (now on r868, same story).