DD is not working

Scott Ehrlich scott at MIT.EDU
Wed Aug 1 19:15:31 UTC 2007

On Wed, 1 Aug 2007, cj wrote:

> Scott Ehrlich wrote:
>> Also check /var/log/messages and see if it gives any indication of what
>> might be going on.
>> If the drive is mounted, and you do a df, the left column shows the /dev
>> device the system is using.   Verify that, then as root umount the volume
>> (far right column), then, either as root or yourself, dd
>> if=/dev/whatever_it_said of=blah
>> This is provided you have proper disk space and proper permissions to
>> write to the volume you want to save the data to.
>> Scott
>> On Wed, 1 Aug 2007, cj wrote:
> the /var/log/messages is not telling me anything about the DD command.
> im beginning to wonder if this is a kernel bug because on 6.06 i could
> run DD no problem..

I run 7.04 at home and have never had a problem with dd'ing anything.

Do you have a USB or floppy disk or something else you can test dd from?

Narrow the problem among the CD/DVD drive, media, and other devices.

Is the media clean, or are there any scratches/marks?

> --cj
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