Want to know which Hard disks have been that with that popcorn hour ?
for the A110 check here
I couldn’t find a list like that for the A100, but all ATA 100 drives should work on the A100. Users did report problems with the Western Digital DC500 models.
Please note that the big difference between the A100 and A110 is, that the A100 takes IDE drives, the A110 takes SATA drives.