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From: James H. Newman on 6 May 2008 19:05
Is it safe to use dd on a hard drive, when the hard drive is the
source for the dd command?
From: James H. Newman on 6 May 2008 19:07
On Wed, 07 May 2008 01:05:02 +0200, James H. Newman wrote:

> Is it safe to use dd on a hard drive, when the hard drive is the source
> for the dd command?

I meant a mounted hard drive.


From: Douglas Mayne on 6 May 2008 19:47
On Wed, 07 May 2008 01:07:08 +0200, James H. Newman wrote:

> On Wed, 07 May 2008 01:05:02 +0200, James H. Newman wrote:
>
>> Is it safe to use dd on a hard drive, when the hard drive is the source
>> for the dd command?
>
> I meant a mounted hard drive.
>
I guess it would be okay if it is mounted read only. If it is mounted RW
then your copy could end up inconsistent.

BTW, if you are trying to backup your root partition, then booting from
a live CD often solves this problem.

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