[A question about whether it is possible to use guestmount on a guest which does not have /etc/fstab. I've no reproduced this because I'm CC-ing my reply to a public mailing list] It's definitely possible. I would suggest first using $ virt-filesystems -a disk.img --all --long -h to get an idea of what's inside your disk image, then you use a command such as: $ guestmount -a disk.img -m /dev/sda1 /tmp/mnt As for the particular question about lack of /etc/fstab. Are you getting some kind of error when using the guestmount -i option? It used to be (a long time ago) that libguestfs inspection[1] could not handle guests that did not have /etc/fstab, but that should be fixed in recent versions. If you mean, something which isn't a virtual machine disk image, then of course libguestfs can handle these. See reference [2]. Rich. [1] http://libguestfs.org/guestfs.3.html#inspection [2] http://libguestfs.org/guestfs-faq.1.html#whats-the-deal-with-guestfish--i -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-df lists disk usage of guests without needing to install any software inside the virtual machine. Supports Linux and Windows. http://people.redhat.com/~rjones/virt-df/