Media Information:
The hard drive is manufactured by Hitachi, with a storage capacity of 160GB. The model number is HTS543216L9A300.
It operates at a speed of 5400 rpm. The serial number (SN) is LCDYG6AB, the part number (P/N) is 0A57363, and the manufacturing code (MLC) is DA2352.
The series is 5K320, and it uses a SATA interface.
Fault Description:
After communicating with the customer, it was found that the system failed to boot after a sudden crash during restart.
Data Recovery Process:
The data recovery engineer used MHDD software to test the hard drive. The drive was recognized correctly in terms of model and capacity. However, during sector scanning, some sectors were readable while others were not—this pattern was very consistent. This type of issue is common in hard drives and typically indicates that one of the read/write heads is damaged. When the faulty head attempts to read a bad sector, it becomes unreadable.
After discussing the issue with the customer, the engineer proceeded with the recovery process. The first step was to connect the drive to a UDMA data recovery machine and perform a split operation. Once the good head was processed, the engineer mirrored the data from the good head first. After completing the image of the good head, the drive was removed, and the good head assembly was replaced in a 100-level clean room. The disk was then reassembled, sealed, and connected back to the UDMA machine to mirror the data from the damaged head. Once this was completed, the data was successfully restored without any loss.
Data Recovery Result:
100% of the data was successfully recovered.
Darth Data Recovery Tips for Customers:
Always ensure important data is backed up regularly, especially when dealing with older drives that may be more prone to failure. If you encounter data loss, it's best to seek help from a professional data recovery service to maximize the chances of successful recovery. Don’t attempt DIY fixes unless you're fully trained, as improper handling can cause further damage.
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