I'm having the same problem. I've had an iPod Classic running Rockbox with no problems for a couple of years. emCORE v0.2.3 r859, Rb 17f265d-131217.
I coped some music over to it today, and it unmounted itself from the computer. I could verify that the files had been written, but then, on reboot it spends several minutes scanning the disk and then says:
Prefetch abort at 65FD2CB4
FSR 0x5
(domain 0, fault 5)
I've used the emCORE menu to clear out the Rockbox settings and database, and to try loading a fallback image (r31516-120101), which says:
Data about
at 0805731C
FSR 0x5
(domain 0, fault 5)
address 0x67676F2E
I can't connect the iPod to my computer in either regular or UMS mode, so I'm at a loss to know what I could try next. Any help would be appreciated.
Thanks.