Deskstar T7K500 Hard Disk Drive Specification
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10.2 Register initialization
After a power on, a hard reset, or a software reset, the register values are initialized as shown in the table below.
The meaning of the Error Register diagnostic codes resulting from power on, hard reset, or the Execute Device
Diagnostic command is shown in the figure below.
Table 57: Default Register Values
Register
Default Value
Error
Diagnostic Code
Sector Count
01h
Sector Number
01h
Cylinder Low
00h
Cylinder High
00h
Device/Head
A0h
Status
50h
Alternate Status
50h
Table 58: Diagnostic codes
Code
Description
01h
No error detected
02h
Formatter device error
03h
Sector buffer error
04h
ECC circuitry error
05h
Controller microprocessor error
8xh
Device 1 failed
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