I don't know if the IDE is different than the SCSI version on Amiga, but for SCSI I have my Amiga disks prepped under hdtoolbox to have RDB, and I use mountlist for PC and Mac formatted disks. The Amiga disks are recognised and can be booted from. Using the DKB Rapidfire or Spitfire the disk changes are detected very nicely and it all feels just like using Amiga floppies. I've heard other cards need more handholding such as a tool to tell the OS when the disk was changed though, I have kept a DKB card in my machines just for use with my Zip drive, even in my A4000T which has much faster SCSI built in the motherboard. If the drive is scanned at boot time you should be able to have an RDB disk recognized at boot time, and use the diskchange notify tool as needed.
