Case:
Computer recognition cannot reach the hard disk
Solution:
The sound of the hard disk is not normal with professional equipment, and the sound of a card head is determined that there is a problem with a magnetic head.According to the requirements of the magnetic head, select the appropriate hard disk spare parts in the dust -free room to perform the magnetic head replacement operation of the fault disk.The firmware problem, detected by PC3K-UDMA, is indeed wrong in the firmware.After repairing the firmware, the hard disk is recognized to access the sector normally.Test that there are only traffic dots and no physical bad sepems.Extract data.