Optical Drive and Library SCSI-2 Command Reference

SCSI-2 Drive Command Set
Mode Sense (Group 0) Command (1AH)
Chapter 22-70
Vendor Unique
PS The Parameters Savable bit of 1 indicates this
parameter page is savable in non-volatile RAM.
DAIR A Direct Access Inquiry Response bit of 1 indicates the
Peripheral Device Type field in the Inquiry Data
indicates "Direct Access Device."
A DAIR bit of 0 indicates "Optical Memory Device" in
the Peripheral Device Type field in the Inquiry Data.
The DAIR default setting is 0.
DWR A Disable Write Reordering bit of 1 indicates write
reordering is not enabled.
A DWR bit of 0 indicates write reordering is enabled.
The DWR default setting is 0.
Table 2-61 Vendor Unique Page 21H
Byte 7 6 5 4 3 2 1 0
0 PS (1) Rsvd
(0)
Page Code (21H)
1 Page Length (0AH)
2 Reserved (0) DAIR
3 DWR Quick
Dis-
connect
Rsvd
(0)
Force
Verify
Reserved (0)
4 S1-8 S1-7 S1-6 S1-5 S1-4 S1-3 S1-2 S1-1
5 S2-8 S2-7 S2-6 S2-5 S2-4 S2-3 S2-2 S2-1
6 Reserved (0) DOM FWC
7-11