efibootmgr ignores \'s

When anaconda issues the command (according to program.log): efibootmgr -c -w -L Fedora -d /dev/sda -p 4 -l \EFI\fedora\shim.efi efbootmgr -v reports the entry as: Boot0000* Fedora HD(4,3885800,64000,46559d7b-e280-468b-a298-0dafbc4d1575)File(\EFI\fedora\shim.efi) If I remove that entry, and then use the identical command as root: efibootmgr -c -w -L Fedora -d /dev/sda -p 4 -l \EFI\fedora\shim.efi efibootmgr -v reports: Boot0000* Fedora HD(4,3885800,64000,46559d7b-e280-468b-a298-0dafbc4d1575)File(EFIfedorashim.efi) And the system isn't bootable. So… I'm confused. Chris Murphy