Hitachi ULTRASTAR 15K450 HUS154530VLF400 - Manual (Page 391)

Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
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22.2.11 Reserved (Byte 18 through 19)
Reserved fields are filled with zero.
22.2.12 Vendor unique error information (Byte 20 through 23)
This field gives detailed information about the error. It contains a unique code which describes where the error was detected
and which piece of hardware or microcode detected the error depending on current operation.
22.2.13 Physical Error Record (Byte 24 thru 29)
• ILI = 1 - This field contains zeros.
• ILI = 0 - These bytes contain the physical location of the error in cylinder, head, and sector. Bytes 24, 25, and 26 are
cylinder high, middle and low bytes respectively, of the cylinder number. Byte 27 is the head number. Bytes 28 and
29 are the the high and low bytes, respectively of the sector number.
If the head is undetermined, bytes 24, 25, and 26 are set to 0FFFFFFh. If the head number is undetermined, byte 27 is
set to 0FFh. If cylinder, head, and sector have no relevance the the error, bytes 24 through 29 will all be set to
0FFFFFFFFFFFFh for Valid = 0 and ILI = 0. This Physical Error Record field is valid for Sense Key 1, 3, and 4 only.
22.2.14 Reserved (Byte 30 through 31)
Reserved fields are filled with zero.
Valid ILI Description
1 0 Cylinder Number (bytes 24-26)
Head number (byte 27)
Sector Number (bytes 28-29)
1 1 0x000000000000
0 x 0x000000000000 - (not used/invalid)