[CentOS] Accessing crashed disk

Thu Dec 14 22:06:23 UTC 2017
Nizar Armansyah <nab2k4 at gmail.com>

If the data is important to you, don't mess around and contact a
reputable professional data recovery expert or company.

If losing your data is a viable option, try to do it yourself.
Otherwise seek professional help, with the data recovery effort of

On Fri, Dec 15, 2017 at 4:31 AM, J Martin Rushton
<martinrushton56 at btinternet.com> wrote:
> On 14/12/17 18:57, Warren Young wrote:
>> On Dec 13, 2017, at 5:15 PM, J Martin Rushton <martinrushton56 at btinternet.com> wrote:
>>> # dd if=/dev/sdc of=/home/dd-copy-of-sdc
>> Better, use ddrescue:
>>    https://www.gnu.org/software/ddrescue/
>> dd will do unfortunate things like quit early on I/O errors, even if later blocks would read just fine.  ddrescue assumes the input file is dodgy and tries to cope.
> Looks interesting.  I've only used dd in anger, and then only maybe 3 or
> 4 times over the last 20 years.  It's worth pointing out that ddrescue
> is not in the main distro, you'll need to get it from EPEL.
> Whatever method you use though: "Be diligent because every time a
> physically damaged drive powers up and is able to output some data, it
> may be the very last time that it ever will." (ddrescue manual section 9)
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