I got a pair of CompactFlash to IDE Adapters, which are the ones that mlord suggested, and I got a pair of 32GB CF cards. I soldered a pair of pins to the master/slave jumper holes and am using jumpers to select which is which.

They work fine individually. They work fine if the other drive is a real hard drive. (Or if both are real hard drives.) But if I try to use them both in the empeg at once, only one shows up. Boot-time detection only shows it seeing hda, and after boot, /proc/ide/ only shows hda.

Any ideas why this isn't working right? Could it be a problem with the cards? With the adapters? Position of the master and slave devices on the cable?

I'm at a total loss. I've been working on this for like four hours now with no luck.