If you want to mount a HFS+ partition in Arch Linux:
1. Install the hfsprogs package:
#pacman -S hfsprogs
2. Install hfsutils from AUR:
#pacman -S base-devel wget
$https://aur.archlinux.org/packages/hf/hfsutils/hfsutils.tar.gz
$tar xvzf hfsutils.tar.gz
$cd hfsutils
$makepkg -Acs
#pacman -U hfsutils-*.pkg.tar.xz
After rebooting, check by $grep hfsplus /proc/filesystems, it should output “hfsplus”.
Reference: http://raspberrypi.stackexchange.com/questions/28463/mount-hfs-under-arch-linux-arm