If you haven't tried using 'strace mkfs.<fs>" it's very educational. All it does is write some stuff to the disk. It's mostly zeros, but also the signature, UUID, stuff that makes up the superblocks. The fact this fails, suggest the device can't even handle basic writes. So there's no reason to believe that the installer would have any success installing the OS to such a device. I'd expect there are kernel messages if mkfs fails - most likely write failure to specific sectors. Chris Murphy -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org