Description of problem: Tiny Core Linux ISOs are not recognized by libguestfs inspection. Version-Release number of selected component (if applicable): libguestfs 1.25.46 How reproducible: 100% Steps to Reproduce: 1. Download an ISO from http://distro.ibiblio.org/tinycorelinux/downloads.html 2. Use virt-inspector, guestfish -i, etc. Actual results: No operating system is found in the guest. Additional info: The format is rather involved. See the details in the message below: https://www.redhat.com/archives/libguestfs/2014-March/msg00231.html