Re: [Qemu-devel] How to extract content of a raw image on host?

[JonY]

Dirk Behme wrote:
> JonY wrote:
> > Dirk Behme wrote:
> >
> > > Hi,
> > >
> > > is there a way to extract the contents of a qemu raw image on (x86 
> > > Linux) host without starting QEMU itself? If so, any hint would be 
> > > quite nice.
> > >
> > > I'm looking for anything like the reverse what
> > >
> > > http://lists.gnu.org/archive/html/qemu-devel/2006-04/msg00448.html
> > >
> > > seems to do. Extract files/directories from an existing raw image.
> > >
> > > qemu-img reports me
> > >
> > >  > qemu-img info disk.img
> > > image: disk.img
> > > file format: raw
> > > virtual size: 4.3M (4515328 bytes)
> > > disk size: 4.3M
> > >
> > > but what is in it and how to access the content?
> > >
> > > Thanks, and sorry if this is a FAQ and I missed the correct search 
> > > string,
> > >
> > > Dirk
> > Hi,
> >
> > have you tried using a loop back mount?
>
> # mount -o loop disk.img mnt/
> mount: You have to specify a file system type
> # mount -t raw -o loop disk.img mnt/
> mount: unknown file system type „raw“
>
> Sorry if I miss the obvious ;)
>
> Dirk
Hi,

"raw" is not really a file system, its just a way of saying the image 
has a "exact copy of every bit" of what a physical disk would have.

Try, "mount -o loop disk.img mnt/", mount might be able to determine the 
correct file system.

If it is a hard disk image with partition tables, try opening it with 
fdisk to confirm so. List down the partitions. Note the offsets

Try something like "mount -o loop,offset=32256 disk.img mnt/"

see here for more details:
http://howto.wikia.com/wiki/How_to_see_the_content_of_a_Qemu_image_on_a_linux-based_OS