SET CAPACITY Command Does Not Exist

Ralph Weber ralphoweber at CompuServe.COM
Mon Feb 21 13:20:39 PST 2000

* From the T10 Reflector (t10 at, posted by:
* Ralph Weber <ralphoweber at>
} 2.  What would be the impact of changing the opcode
} from 1Fh to 92h (and thus going to a 16-byte CDB)?
} (Ralph Weber has requested this because 1Fh is the
} only 6-byte opcode that is unused.)

Actually, I asked (or intended to ask) that the SET
CAPACITY opcode be changed from 1Fh to 0Bh.  This keeps
the CDB at 6 bytes and having the same format as
originally proposed, while still reserving the 1Fh
opcode for some TBD extension of the 6-byte CDB



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