DD not working
Karl Larsen
k5di at zianet.com
Fri Aug 31 01:24:30 UTC 2007
Jim Cornette wrote:
> Karl Larsen wrote:
>> Vivek J. Patankar wrote:
>>> Karl Larsen wrote:
>>>> mount: /dev/sdb5 already mounted or /mnt busy
>>>>
>>>> The last 2 lines say that /dev/sdb5 is mounted to this Old Hard
>>>> Drive somehow. I did not do this. /etc/fsack did not do this. So
>>>> not sure what
>>>
>>> Yes you did. See your opening mail of the thread titled 'dd and cp
>>> -a' in which you say that you mounted it to /mnt, but didn't mention
>>> how. I am assuming you made it permanent by adding it to fstab. And
>>> if you did this, dd'ing the partition would take this setting over
>>> to the new drive.
>>>
>> Guys I am getting a information overload. My question is simple
>> now. If I do it right is it possible to use dd to make a copy of this
>> F7 to another Hard Drive?
>>
>> Also you NEVER mount a partition that your dd transfering too. It
>> finds it fine.
>>
>
> Wouldn't you lose 10 GB and the disk would appear to be a 20 GB disk
> also with dd?
>
> What about making a /boot, a /home, a / and a swap partition on the
> new drive, create a filesystem and label the new partitions, then
> mount the new / under a /mnt/newdrive directory, create a boot and
> home partition on the new / partition so you could mount the to be new
> home drive under a /mnt/newdrive/home mount point and then do the same
> with the soon to be new boot directory under /mnt/newdrive/boot
>
> Once the new disk partitions are mounted you could use rsync to
> replicate your present installation onto the new drive.
>
> I did this once and was fairly successful and got the replicated disk
> to start to boot by using the rescue mode to run grub-install on the
> new disk. It was a sata drive and the other drive was an IDE so I had
> other issues with the attempt. If the target disk was IDE instead of a
> SATA drive, it might have worked.
>
> Someone more familiar with rsync and the effects of /proc, /sys and
> other not truly directories might be able to answer to whether rsync
> would work when transferred to IDE to IDE. I figure the kernel panic
> that I got was because of the IDE to SATA attempt.
>
> Using some replication program for Linux would probably be the best
> option rather than DD or rsync.
>
> Jim
>
Hi Jim, well the third iteration of a dd to the new drive is
ongoing. So When it is done I will not reboot until I have used fsck on
the new file system. Last time I had big trouble even getting a chance
to check the file system :-)
--
Karl F. Larsen, AKA K5DI
Linux User
#450462 http://counter.li.org.
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