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4.1 Control/Sense Commands
4.1.8 REZERO UNIT (01)
Bit
Byte
7 6 5 4 3 2 1 0
0 X'01'
1 0 0 0 0 0 0 0 0
2 0 0 0 0 0 0 0 0
3 0 0 0 0 0 0 0 0
4 0 0 0 0 0 0 0 0
5 0 0 0 0 0 0 0 0
This command moves the read/write heads of the disk drive to the initial position
(physical cylinder 0 / physical track 0). A data block with the physical block
address of zero exists at the initial position. Initialization of the disk drive's
positioning control system and automatic adjustment are also performed by this
command.
C141-C013 177