It's the IDE drive, not the SCSI, because the SCSI drive runs on cyberscsi.device
Well, command 28 is HD_SCSICMD a.k.a. Direct-SCSI.
Is the drive bigger than 4GB? If not, I couldn't imagine a reason why SFS uses Direct-SCSI.
Is the drive bigger than 8GB? If it is, which software do you use to deal with the limit? SFS alone cannot do it.