Do you have the drives set up as Master (primary) and Slave? Or Cable Select on both drives?Do you have any other devices (e.g.CD-ROM) on the ATA 66 and ATA 100 buses?

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The CD-ROM is on the ATA33 bus.

I tried half a dozen different jumper configurations, including master/slave, and cable select on both drives.

I tried moving the secondary drive to the ATA100 with the primary drive, with no change other than that it locks up BOTH drives now.

Tried a spare 30GB drive on the ATA66 bus and it worked beautifully, moving a GB of data in under a minute, to and from the main drive.

The secondary (20GB) seems to have trouble moving data FROM the drive. Getting it on there is no problem. Getting it OFF takes 15 minutes for only 3mb.

I'd like to transfer its contents (a mere 11GB of data) to the 30GB drive, but at the speed it's moving, it'll take 3 days.