Description of problem: If the device used in grub2-install is a symlink, the file command must "follow the link" in order to check the real device. How reproducible: # grub2-install /dev/mapper/mpatha1 The PReP partition is not empty. If you are sure you want to use it, run dd to clear it: dd if=/dev/zero of=/dev/mapper/mpatha1 This is because the destination is a symlink: lrwxrwxrwx. 1 root root 7 Nov 7 15:59 mpatha1 -> ../dm-1
Created attachment 640268 [details] Adds the parameter to fix the problem
grub2-2.00-13.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/grub2-2.00-13.fc18
Package grub2-2.00-13.fc18: * should fix your issue, * was pushed to the Fedora 18 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing grub2-2.00-13.fc18' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2012-19181/grub2-2.00-13.fc18 then log in and leave karma (feedback).
grub2-2.00-13.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report.