Hitachi ULTRASTAR 15K450 HUS154530VLF400 - Manual (Page 389)

Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
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22.2.10.2 Sense Key Specific - Recovered (Sense Key = 1h) or Medium (Sense Key = 3h) or Hard-
ware (Sense Key = 4h)
Hardware (Sense Key = 4h) or Medium Error (Sense Key = 3h)
Actual Retry Count is reported.
Table 267: Actual Retry Count
SKSV Sense-key specific valid
0 Actual Retry Count is not valid.
1 Actual Retry Count is valid.
Actual Retry Count Number of retry steps used in attempting to recover from the error condition.
Secondary Step Secondary error recovery step (valid for servo errors only).
ERP Type Error recovery table branch for this error. Valid values are shown in the table below.
22.2.10.3 Sense Key Specific - Not Ready (Sense key = 2h)
These fields are defined for the Format unit (04h) command with the Immediate bit set to one and the Send Diagnostic (1Dh)
command with Background self-test function.
Byte
Bit
7 6 5 4 3 2 1 0
15 SKSV Reserved
16 Secondary Step ERP Type
17 Actual Retry Count
Recovery Type ERP Type
Read 0x00
Verify 0x01
Write 0x02
Seek 0x03
Read, Sync Byte branch 0x04
Read, Thermal Asperity branch 0x05
Read, Minus Mod branch 0x06
Verify, Sync Byte branch 0x07
Verify, Thermal Asperity branch 0x08
Verify, Minus Mod branch 0x09