The 6GB Hitachi micro-drive in my SL-C3200 failed.
I have successfully replaced it with a SanDisk Compact Flash Ultra 30MB/s (UDMA enabled) card (SDCFH-008G-U46).
The card is reported in Angstrom kernel 2.6.24 as;
hda SanDisk SDCFH-008G, CFA DISK Drive