Hi,
Background: I have had a power supply unit failure and as a result the
PCBs of three hard drives were fried as well as the processor.
I have replaced the PCB from an identical drive for the data drive, a
WD200EB-00CSF0. The harddrive is seems to work fine for almost all
files: It can be mounted, data is generally accessible, etc.
When I try to image the drive with ddrescue, it proceeds without errors
within 20 minutes to 16.5Gb/20Gb where it encounters the first errors.
It then takes approximately another 5-10 minutes apparently only getting
errors before finally crashing the whole system.
A photograph of the screen can be seen here: (Sorry for the flash...)
http://img64.imageshack.us/img64/745/crasho.jpg
The result is the same with:
ddrescue -n
ddrescue --direct
ddrescue --raw
All attempts were made in runlevel 1 on a Centos 5.4 system with kernel
2.8.18. Resuming recovery with the log file makes the system crash
shortly after resuming.
Can anybody tell me how to either:
- read out a complete image (obviously without the presumably bad
sectors) so that I can run file system recovery? The image now is truncated.
- fix the hard drive problem? (I.e. why should the hard drive have bad
sectors in the last few GB given a mere power surge?)
Many thanks for any help!
- Arik
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