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| Table | |||
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Field |
| Definition | ||
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Valid | The Valid bit, when set to 1, indicates that the Information field contains valid information, as defined | |||
below. When set to 0, it indicates that the contents of the Information field are not as defined below. | ||||
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Error Code | Either 70h, indicating that current errors are to be reported, or 71h, indicating deferred errors are to be | |||
reported. |
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Segment | This feature is not supported and will return a zero value. | |||
Number | ||||
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FileMrk | The File Mark field is reserved for sequential access devices. This field will return a zero value. | |||
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EOM | The | |||
zero value. |
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ILI | Incorrect Length Indicator. When this bit is set to 1, it indicates that the requested logical sector length | |||
did not match the logical sector length of the data on the media. This field is only set for incorrect byte | ||||
| transfer lengths on a READ LONG and WRITE LONG command descriptor block. | |||
| The sense key, additional sense code, and additional sense code qualifier provide a hierarchy of infor- | |||
Sense Key | mation. The sense key provides the highest level of information about error and exception conditions. | |||
The additional sense code and qualifier provided more detailed information. | ||||
| The sense keys supported by the drive are described in Table | |||
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| The Information field contains the following | |||
| 1) The unsigned logical sector address associated with the sense key. | |||
Information | 2) The difference between the requested length and the actual length in either bytes or sectors, as de- | |||
| termined by the command. This difference is called the residue. | |||
| 3) A description of each of the drive's supported commands definition for this field is contained in Ta- | |||
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Additional | The Additional Sense Length field indicates the number of addition sense bytes that can follow. If the | |||
Sense | Allocation Block Length specified in the Command Descriptor Block is too small to transfer all of the | |||
Length | additional sense bytes, the Additional Sense Length byte value is not adjusted to reflect the truncation. | |||
Command- | The | |||
Specific In- | BLOCKS command. It contains either the Logical Block Address of the first defect descriptor not re- | |||
formation | assigned or, if all the defect descriptors were reassigned, FFFFFFFFh. | |||
Additional | The Additional Sense Code field indicates further information related to the error or exception condi- | |||
tion reported in the sense key. If the drive does not have further related information, the additional | ||||
Sense Code | ||||
sense key is set to NO ADDITIONAL SENSE INFORMATION. See Table | ||||
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Additional | The Additional Sense Code Qualifier field indicates detailed information related to the additional sense | |||
Sense Code | ||||
code. If the drive does not have detailed information, the field is set to 0. | ||||
Qualifier | ||||
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Field Re- | The Field Replaceable Unit Code specifies a unit that has failed: | |||
placeable | ||||
Unit |
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| Code |
| FRU | |
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| 1 |
| Host | |
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| 2 |
| Hard Disk Assembly (HDA) | |
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| 3 |
| Printed Circuit Board Assembly (PCBA) | |
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SKSV | ||||
READY and UNIT ATTENTION/RPL Status Change). The SKSV bit and | ||||
| may be 0 when the sense key is NOT READY. | |||
The contents of the | ||||
Specific | the sense keys for which the drive supplies |