How do I mount a .img file containing backup

[vorko79]

Hello all, I'm relatively new to Ubuntu and I like it! Now, I successfully used the following command to create a backup image to an external HD... dd if=/dev/sda of=/media/disk/backup.img

Now, I would like to know if there is a way to mount the .img file (backup.img) so that I can browse and retrieve specific files. I've tried AcetoneISO, Nero Linux, Gmount-iso, and a bootable ghost disk of somesort.(cant find disk to give exact name). ALL have failed!

One other related question is, if I were to restore the backup.img to a larger HD what would happen to the free space? I ask this because I am triple booted,, OS X / Vista / Ubuntu. My guess is that the free space on a larger HD would be useless after restoring backup.img

Thanks in advance!

[jmadero]

Might help
Mount .img file - Ubuntu Forums

As for the free space, you should still have it, it won't just disappear on you. Worst case you'll have to resize a parition using gparted

[waterhead]

I don't know if you have resolved this yet, but you can mount the image to view it. First you need a folder to mount it in, I'll created a folder in your home directory called /mounted.

mkdir ~/mounted

Now mount the image with root permissions.

sudo mount -o loop /media/disk/backup.img /home/vorko79/mounted

Of course, change your username to the correct one. To then unmount it, use this command.

sudo umount /media/disk/backup.img