I picked up a samsung player for a song (open box, no cables, which were all proprietary anyway) specifically to strip the seagate 5gb drive out of it. I expected it not to work in the Z, and it didn't. It worked in a USB CF adpator under windows, but I couldn't reformat or repartition it.
Instead I put in in a CF->IDE adator and used it as the hard drive for an embedded motherboard - works fine there - repartition and format. It works perfectly as a pure IDE device.