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9 Normal and Error Output Field Descriptions
9.1 Overview
Normal and Error Output Field describes requirements for all commands. Individual commands may describe
additional requirements.
The normal outputs and error outputs (see ACS-5) for each command include:
a) a one byte STATUS field (see Section 9.2);
b) a one byte ERROR field (see Section 9.3);
c) a COUNT field (see Section 9.4), SACTIVE field (see Section 9.5), and SATA STATUS field (see Section 9.6),
if required, for certain commands (e.g., the READ FPDMA QUEUED command, Sanitize Device feature set
commands, and WRITE FPDMA QUEUED command); and
d) an LBA field that may contain the LBA of First Unrecoverable Error (see Section 9.7.2).
e) Device Signatures field for Normal Output (see Section 9.9).
9.2 STATUS Field
9.2.1 Overview
The STATUS field is one byte and is conveyed as an output from the device to the host (see applicable transport
standard). Each bit, when valid, is defined in Table 27.
Table 27 STATUS field
Bit
Name
Reference
7
BUSY bit
9.2.3
6
DEVICE READY bit
9.2.7
5
DEVICE FAULT bit
9.2.6
STREAM ERROR bit
9.2.4
4
N/A
3
DATA REQUEST bit
9.2.5
2
ALIGNMENT ERROR bit
9.2.2
1
SENSE DATA AVAILABLE bit
9.2.9
0
ERROR bit
9.2.8
53
Hard Disk Drive Specification