HDToolBox never showed any devices on my A2000 with GVP 040 all these years. But after I got an A1200 a few weeks ago, I was recearching the 4 gig limit, and stumbled onto someone mentioning changing HDToolBox to use the gvpscsi.device. I took a wild stab and clicked once on the HDToolBox icon, and selected Icons - Information, and changed the SCSI_DEVICE_NAME= entry from scsi.device to gvpscsi.device, and presto - my GVP SCSI devices now show up in HDToolBox.
