ShimSource is none
    Installing rEFInd on OS X....
    mount_msdos: /dev/disk0s1 on /Volumes/ESP: Invalid argument
    mount_hfs: error on mount(): error = -1.
    mount_hfs: Invalid argument
    Installing rEFInd to the partition mounted at /Volumes/ESP
    Found rEFInd installation in /Volumes/ESP/EFI/refind; upgrading it.
    Copied rEFInd binary files

    Notice: Backed up existing icons directory as icons-backup.
    Existing refind.conf file found; copying sample file as refind.conf-sample
    to avoid overwriting your customizations.


    Installation has completed successfully.

    Unmounting install dir
    Unmount failed for /Volumes/ESP
    ANONs-MacBook-Air:refind

-bin-0.10.8 ANON$