Hitachi hard disk drive specifications
181
11.29 Recalibrate (1xh)
Command Block Output Registers
Command Block Input Registers
Table 123 Recalibrate Command (1xh)
The Recalibrate command moves the read/write heads from anywhere on the disk to cylinder 0.
If the device cannot reach cylinder 0, T0N (Track 0 Not Found) will be set in the Error Register.