Bitfields for SMARTDRV status: Bit(s) Description ) 7 not cached (no read-caching) 6 write-through (not write-cached) 0-5 real drive number (0=A, 1=B...) Notes: the "real" drive number is always set to 00h for RAM disks and to 3Fh for CD-ROMs; unfortunately, the latter means that an uncached CD-ROM has status FFh, just as a nonexistent drive does also supported by Novell DOS 7 - Caldera/Lineo DR-DOS 7.03 NWCACHE