Hitachi hard disk does not recognize the disk NV error recovery case

Case:
Customers said that this problem occurred after the computer suddenly was powered off during normal use, and it had been used normally before the disk.

Solution:
Pick up the PC3000 UDMA directly, and find that the magnetic head reset sound is normal, and the indicator light in 3K is normal.The hardware failure is ruled out, which is basically deeper on the plate module and NV-RAW. From experience, the chance of NV-RAW error is high.After entering the 3K UDMA, it was found that it was impossible to recognize. The 7250 ** gal3 ** in the “Custom Family”” mode that comes with UDMA comes with UDMA can enter normally.The SA module was detected