Disk imaging program?

Niles Rogoff nilesrogoff at gmail.com
Wed Jun 25 23:19:28 UTC 2014


Just did some research, instead of zerofree (which actually does work on
ext4 I think) you should look into sfill, and if you backup using e2image
you wouldn't need to run either


On Wed, Jun 25, 2014 at 7:16 PM, Niles Rogoff <nilesrogoff at gmail.com> wrote:

> I was under the impression that zerofree only worked with ext2/3
>
> 1) Don't know, but probably not. You can always boot from a flash drive or
> use a live operating system
> 2) No, ideally you would recover all of your split files, concatenate them
> into one, gunzip it then restore from it
>
>
> On Wed, Jun 25, 2014 at 5:56 PM, John Hupp <ubuntu at prpcompany.com> wrote:
>
>>  On 6/25/2014 3:36 PM, Niles Rogoff wrote:
>>
>> >tar would be unable to correctly save the permissions on those files
>>
>>  I should clarify that this only applies to NTFS partitions.
>>
>>
>>  On Wed, Jun 25, 2014 at 3:35 PM, Niles Rogoff <nilesrogoff at gmail.com>
>> wrote:
>>
>>> He's saying if you, instead of copying sector by sector, decided put all
>>> the files into a tar file, then tar would be unable to correctly save the
>>> permissions on those files.
>>>
>>>  This would be in place of dd, and would not be able to copy the boot
>>> sector of a device or partition
>>>
>>>
>>> On Wed, Jun 25, 2014 at 2:04 PM, John Hupp <ubuntu at prpcompany.com>
>>> wrote:
>>>
>>>> On 6/25/2014 1:12 PM, Nils Kassube wrote:
>>>>
>>>>> John Hupp wrote:
>>>>>
>>>>>> And point well taken: it does seem to me that, as a refinement of the
>>>>>> initial suggested plan, gzip alone should suffice since we are dealing
>>>>>> with a single-file output from dd and not a collection of files.
>>>>>>
>>>>> Well, you could use a command chain dd | gzip | tar to split the output
>>>>> for several DVDs including a prompt for the next medium.
>>>>>
>>>>> BTW: If you want to save data only, you shouldn't use tar for ntfs
>>>>> partitions because tar doesn't know about the ntfs permissions which
>>>>> different from the Unix permissions.
>>>>>
>>>>>
>>>>> Nils
>>>>>
>>>>>
>>>> Tar must do some processing of its source contents then?  The original
>>>> suggestion for using dd in this thread came from Niles Rogoff, and his
>>>> prescription was to use usplit.  I don't know that this command is native
>>>> to Ubuntu, but I believe split is.  And if split merely does that, then it
>>>> seems like ntfs or unix permissions should be preserved.  Agree?
>>>>
>>>> And I think I still have this question lingering: Does dd knows how to
>>>> prompt for the next DVD (the next split) during a restore operation?
>>>>
>>>>
>>>> --
>>>> ubuntu-users mailing list
>>>> ubuntu-users at lists.ubuntu.com
>>>> Modify settings or unsubscribe at:
>>>> https://lists.ubuntu.com/mailman/listinfo/ubuntu-users
>>>>
>>>
>>>
>>
>> I am currently thinking this procedure may work:
>>
>> Wipe Windows partition free space: D/L Sdelete from
>> http://technet.microsoft.com/en-us/sysinternals/bb897443.aspx, save to
>> c:\windows\system32, and run:
>> $ sdelete -z c:
>>
>> Wipe Linux partition free space: Boot *buntu Live disc, install zerofree,
>> and run:
>> $ zerofree -v /dev/sda5
>>
>> Then for an external hard drive mounted at
>> /media/user/HD-PCTU2/laptop-image:
>>
>> $ cd /media/user/HD-PCTU2/laptop-image
>> $ sudo -i
>> # dd if=/dev/sda bs=64K | gzip -c -9 | split -b 4500M - drivebackup.img.gz
>>
>> ------------------------------
>>
>> After that, I would have to manually burn the the various
>> drivebackup.img.gz files to DVD.
>>
>> Apart from corrections/improvements to the above, I still have two
>> questions:
>> 1) For restore, if I boot a *buntu Live disc, just before running a dd
>> restoration command, can I remove the *buntu disc and insert the first
>> image DVD?
>> 2) Does dd knows how to prompt for the next DVD (the next split) during a
>> restore operation?
>>
>> --
>> ubuntu-users mailing list
>> ubuntu-users at lists.ubuntu.com
>> Modify settings or unsubscribe at:
>> https://lists.ubuntu.com/mailman/listinfo/ubuntu-users
>>
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/ubuntu-users/attachments/20140625/aaf19a9d/attachment.html>


More information about the ubuntu-users mailing list