[CentOS] disk cloning ?

[hadi motamedi]

On 11/11/13, Arun Khan <knura9 at gmail.com> wrote:
> On Mon, Nov 11, 2013 at 3:14 PM, hadi motamedi <motamedi24 at gmail.com>
> wrote:
>> Dear All
>> I needed to clone my disk to another hard drive . I did it as the
>> following :
>> #dd if=/dev/sdb of=/dev/sdc
>> But after a while, the procedure ended with the "writing to /dev/sdc
>> input/output error" message.
>
> Is /dev/sdc >= /dev/sdb?
>
> Also, input/output error is an indication of a hardware problem (disk
> controller on the board, cable, or the disk).
>
>> Can you please let me know how can I overcome this as the fdisk now
>> returns as "
>> #fdisk /dev/sdc
>> "I do not know how to handle files with mode 81a4
>> must set cylinders"
>
> What does 'parted --list' display?
>
>> What can I do at know ?
>
> Post the answers for above.
>
> -- Arun Khan
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Please find below :
#parted -list
disk /dev/hda 21.5GB
sector : 512B/512B
partition : msdos
disk : /dev/sdb 40GB
sector : 512B/512B
partition : msdos
error: unable to open /dev/md0
unrecognized disk label.