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10.18.2.3 SCT Status Request
Once an SCT command has been issued, a status is reported in the ATA registers. This status indicates that the
command was accepted or that an error occurred. This ATA status return does not indicate successful completion of
the SCT actions. Some commands can take several minutes or even hours to execute. In this case, the host can
determine execution progress by requesting SCT status.
Log page E0h contains the status information. Reading log page E0h retrieves the status information. The SCT status
may be acquired any time that the host is allowing to send a command to the device. This command will not change
the power state of the drive, nor terminate any background activity, including any SCT command in progress.
10.18.2.3.1 SCT Status Request Using SMART
Table 49 Input Registers of SCT Status Request Using SMART
Command Block Output Registers
Register
7 6 5 4 3 2 1 0
Feature
D5h
Sector Count
01h
Sector Number
E0h
Cylinder Low
4Fh
Cylinder High
C2h
Device/Head
-
-
-
D -
-
-
-
Command
B0h
10.18.2.3.2
SCT Status Request Using Read Log Ext
Table 50 Input Registers of SCT Status Request Using Read Log Ext
Command Block Output Registers
Register
7 6 5 4 3 2 1 0
Current
Reserved
Feature
Previous
Reserved
Current
01h
Sector Count
Previous
00h
Current
E0h
LBA Low
Previous
Reserved
Current
00h
LBA Mid
Previous
00h
Current
Reserved
LBA High
Previous
Reserved
Device/Head
-
-
-
D -
-
-
-
Command 2Fh
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Hard Disk Drive Specification