Does E/D require an ASPI driver to access SCSI?
If your SCSI drivers patch the “INT 13” BIOS calls, then an ASPI driver is not needed. As long as “INT 13” can allow Executor to read a SCSI drive, there is no need to use ASPI. Similarly, if you have a 16-bit MSCDEX CD-ROM driver installed, Executor will be able to see your CD-ROM drive (whether it’s SCSI or not) even without ASPI drivers.