Toshiba A20-S259 Maintenance Manual - Page 169
Hard Disk Test Detail Status, Tests and Diagnostics, Table 3-4, Error register contents
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3.20 Hard Disk Test Detail Status 3 Tests and Diagnostics Table 3-4 Error register contents Bit Name Description 7 BBK1 "0" ... Not used (Bad block mark) "1" ... A bad block mark is detected. 6 UNC "0" ... There is no uncorrectable data error. (Uncorrectable) "1" ... Uncorrectable data error has been detected. 5 -- Not used 4 IDNF (Identification) "0" ... Not used "1" ... There was no ID field in the requested sector. 3 -- Not used 2 ABRT (Abort) "0" ... Not used "1" ... Illegal command error or a drive status error occurred. 1 TK00 "0" ... The hard disk found track 0 during a recalibrate command. (Track 0) "1" ... The hard disk could not find track 0 during a recalibrate command. 0 -- Not used. Satellite A20 Maintenance Manual (960-444) 3-57