Creating and restoring image backups
froller at tnclimited.com
Wed Sep 23 12:32:28 UTC 2009
J Bickhard wrote:
> Okay, I went into the teminal and typed in
> sudo dd if=/media/disk-1 of=/media/disk/disk.img
> It said
> dd: reading `/media/disk-1': Is a directory
> 0+0 records in
> 0+0 records out
> 0 bytes (0 B) copied, 0.00120255 s, 0.0 kB/s
> Then I was back at the prompt, I tried to close the window, but it
> said that the windows was running a process, so I figured it was
> running in the background. 12 hours later, I come back to find
> disk.img on my external drive, but it has a size of 0. Nothing. Zippo.
> What did I do wrong THIS time?
> Jake (dats me)
> On Tue, Sep 22, 2009 at 7:03 PM, Fred Roller <froller at tnclimited.com> wrote:
>> J Bickhard wrote:
>>> I couldn't figure out the command-line option, so I just copied all of
>>> the files with the file browser. It said it would take 5 hours to
>>> finish. Why so slow?
>>> Jake (dats me)
>> Could be any number of reasons. I know when I had bad blocks the copy
>> process was painful. Also, if you are coping from within XP then the
>> time is usually wrong. Has been for me on more than one occasion. If
>> you are coping from a Ubuntu then the transfer rate should be on the
>> progress window if it's low then odds are that the system is negotiating
>> some bottle neck.
>> "Life is like linux, simple. If you are fighting it you are doing something wrong."
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>> ubuntu-users at lists.ubuntu.com
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OK step by step:
boot with the live CD and open a terminal
Make sure your current HDD is /NOT/ mounted
which should yeild something like:
froller at metis:~$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/sda1 19G 4.8G 13G 28% / <- #1
[cut for clarity]
/dev/sdb1 459G 131G 305G 31% /Crypt <- #2
[cut for clarity]
/dev/sdc1 2.0G 3.9M 1.9G 1% /media/disk <- #3
Unless you have an IDE hardrive (fat ribbon cable plugged in mobo) you
should see similar set up. IDE would be HDA instead of SDA.
#1 Would presumably be the 80 Gb hdd you are trying to calculate. If it
is /NOT/ listed then it is not mounted. If it /IS/ listed then you need
to unmount it.
Right-click the icon that should be on the Live CD desktop. In
the drop down menu it should say "mount/unmount". If is says unmount
Once SDA is unmounted then run your dd command.
sudo dd if=/dev/sda of=/media/disk/disk.img
please bare in mind that the device listed for your /media/disk-1 may be
something other than SDA which is why we run the df command. If
/media/disk-1 is in an external case and is listed with the df command
you could simply run:
sudo umount /media/disk-1
Just make sure you note the device "/dev/sd[a,b,c,...]" before you do.
dd needs the device to be unmounted.
1. Make sure the [source] data is /unmounted/ from the files system.
2. You know the device /dev/sd[a-z] or for IDE /dev/hd[a-d].
3. Run "dd if=/dev/sd[a-z] of=/media/disk/disk.img
Be patient, you will get it.
"Life is like linux, simple. If you are fighting it you are doing something wrong."
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