How to mount/extract a .img ?

linus72 · 08-06-2009, 11:02 AM

So, I got debian live usb .img
I don't wanna dd my usb as I already know what needs to be done to install it myself

But, how do I mount the .img file?
I tried mount -o loop name.img
and it says define fs type?
so, mount -o loop -t ext2 name.img or what?

nowonmai · 08-06-2009, 11:11 AM

Is it a CD image? If so, try -t iso9660
You will need to specify the fstype, so the best thing to do is find out what that is.

the trooper · 08-06-2009, 11:12 AM

Linus,

The second post in this thread suggests a possibility:

http://www.linuxforums.org/forum/lin...nting-img.html

See what you think.

linus72 · 08-06-2009, 11:18 AM

OK
here's what "file debian.img" says

Code:

root@PartedMagic:/media/hda6/home/bz/Desktop# file debian.img
debian.img: x86 boot sector; partition 1: ID=0x83, active, starthead 0, startsector 1, 946175 sectors, code offset 0x31

that's wild huh?

here's mount -t ext2 -o loop debian.img mnt

Code:

root@PartedMagic:/media/hda6/home/bz/Desktop# mount -t ext2 -o loop debian.img mnt
mount: wrong fs type, bad option, bad superblock on /dev/loop3,
       missing codepage or helper program, or other error
       In some cases useful info is found in syslog - try
       dmesg | tail  or so

what else can I try?
mounting it according to offset?
I'm stuck...

there's a few dindows apps that can do this
it must be doable in linux too...

linus72 · 08-06-2009, 11:27 AM

OH

Quote:

"Why do you wanna do this Linus72?"

Quote:

"'Cause I have 2 partitions on usb, one live-rw for remastering/persistency
'cause I already know what dd'ing it does: it labels it DEBIAN_LIVE,installs syslinux, and
copies debian live to usb"

and, it also makes my 2gb usb into a 300+mb usb

??!

the trooper · 08-06-2009, 11:33 AM

Did you try the first command from the link?

Code:

mount -o loop ./<filename>.img /mnt/<some folder>

amani · 08-06-2009, 11:35 AM

see it as a block device with a partition inside

so you need to make a device file and mount it the usual way

linus72 · 08-06-2009, 11:37 AM

How?
I tried mount /dev/debian.img /mnt/debian

Quote:

mount: /dev/debian.img is not a block device

what should I do?

amani · 08-06-2009, 11:39 AM

Quote:

Originally Posted by the trooper

Did you try the first command from the link?

Code:

mount -o loop ./<filename>.img /mnt/<some folder>

Yes this should work for most usb or floppy images

linus72 · 08-06-2009, 11:42 AM

Quote:

root@PartedMagic:/media/hda6/home/bz/Desktop# mount -o loop ./debian.img /mnt/debian
mount: you must specify the filesystem type

I tried that too

michaelk · 08-06-2009, 11:48 AM

Since the image includes the MBR and partition table you will need to use the offset option.
Using the dd command will recreate the image byte for byte. The drive will now appear to be the same size as the image which as you have indicated is 300mb.

http://www.andremiller.net/content/m...ns-using-linux

linus72 · 08-06-2009, 11:49 AM

awesome
check this out too

http://lj4newbies.blogspot.com/2007/...-files-in.html