drive recovery of dual-boot system

Greg Rundlett (freephile) greg at freephile.com
Thu Jan 26 09:40:05 EST 2012


On Thu, Jan 26, 2012 at 2:35 AM, Mike Bilow <mikebw at colossus.bilow.com>wrote:

> Filesystems (and therefore "fsck" targets) reside on partitions of the
> disk, something like "/dev/sdc3", rather than the entire device (or an
> image of it). This is inherent in the design of the system and is
> independent of the types of filesystems or how they are mixed.
>
>
Thanks Mike, I knew that, but somehow thought that there was some magic
that I didn't know or understand that would make the computer do what I
wanted as opposed to what I told it to do :-)


> In order to access partitions within an image file, you want the "kpartx"
> utility:
>
>    http://linux.die.net/man/8/**kpartx <http://linux.die.net/man/8/kpartx>


Ahh, that's the part that was missing from all the tutorials/manpages/faqs
that I've read.


>
> Also, those annoying Dell machines that will not boot from CD will boot
> from USB Flash memory, and it is easy to make one up with SysRescueCD:
>
>    http://www.sysresccd.org/**Sysresccd-manual-en_How_to_**
> install_SystemRescueCd_on_an_**USB-stick<http://www.sysresccd.org/Sysresccd-manual-en_How_to_install_SystemRescueCd_on_an_USB-stick>
>
> Thanks, I plan to give that a try and I'm also going to investigate
setting up a computer on USB stick for my kids.


> On 2012-01-26 00:47, Greg Rundlett (freephile) wrote:
>
>> I have an internal hard drive that won't boot.
>>
> [snip]

> The bad drive in question is 250GB and has a number of partitions and file
>> system types:
>>
> [snip]

>   Device Boot      Start         End      Blocks   Id  System
>> /dev/sdc1               1           7       56196   de  Dell Utility
>> /dev/sdc2               8        1966    15728640    7  HPFS/NTFS
>> /dev/sdc3   *        1966        5881    31453961    7  HPFS/NTFS
>> /dev/sdc4            5882       30401   196956900    5  Extended
>> /dev/sdc5            5882       29402   188932401   83  Linux
>> /dev/sdc6           29403       30401     8024436   82  Linux swap /
>> Solaris
>>
>> I succeeded in creating a copy of the Linux partition using ddrescue
(also called gddrescue in Ubuntu).  There were a few errors found and
corrected by fsck.  I'll post more details later but at this point I'm
pretty happy to have my data.

~ Greg
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