Every CDFS support more than one drive at the same time.
You just need a mountlist for the second one.
But for this you'll have to know the interface where the drive is connected to, and what's the drive ID (if it's SCSI) or if it's master or slave (if it's IDE).
Just make a copy of the other drive's mountlist, edit it and try different unit numbers.
The mountlist should be at the drawer Devs:DosDrivers/ if the drive is mounted at boot.
