The hard drive fell to the ground when it was in use, and data recovery has been done.
The disk was damaged and scratched.
The magnetic head was damaged and there was a noise.
The hard drive had been dismantled for data recovery.
Recovery process:1. Disk and head were damaged, so they should be treated in a dust-free room.
2. Analyzed and collected undamaged disk sectors.
3. Because the disk was scratched and dismantled, recovery was extremely difficult, but we had the exclusive technology to save important data for our customer once again.