60 Commands
LOG SELECT 4Ch
The Log Select command causes log data on the drive to be reset to its default
value or to be set to an initiator specific value.
Pre-Execution Checks:
Command Descriptor Block:
CDB Fields:
The following are valid combinations of values for the PCR (Parameter Code
Reset), Parameter List Length and PC (Page Control) fields:
Otherwise
CHECK CONDITION status is returned, the sense key is set to ILLEGAL
REQUEST
with additional sense of 2400h (Invalid Field in CDB).
Illegal Field Reservation Deferred Error Unit Attention
7 6 5 4 3 2 1 0
0
Operation Code (4Ch)
1
Reserved (0) PCR SP (0)
2
PC Reserved (0)
3
Reserved (0)
6
7
(MSB)
Parameter List Length
8
(LSB)
9
Control
PCR Parameter List Length PC Result
1 0 01b or 11b All the logs on the drive that can be reset are reset
to their default values.
1 0 00b or 10b No action is taken and
GOOD status is returned.
0 >0 01b or 11b Data is sent from the host and is written to the
indicated logs, provided those logs are writable.
PCR 0 Parameter Code Reset. The function performed is defined by the PC field.
