diff --git a/scripts/Arch/OS/partition.sh b/scripts/Arch/OS/partition.sh
index 5056e886..fb14e52c 100755
--- a/scripts/Arch/OS/partition.sh
+++ b/scripts/Arch/OS/partition.sh
@@ -5,7 +5,12 @@ ARCH_DISK="${ARCH_DISK}";
 memory="$(cat /proc/meminfo | awk -F " " '/^MemTotal/ { print $2 }')";
 swapSize="$(echo "$memory" | awk '{ print int(($1 / 1024 / 1024 4) + 0.5)}')";
 
-if [ -z "$ARCH_DISK" ] || [ ! -e "/dev/$ARCH_DISK" ]
+if [ ! -z "$ARCH_DISK" ] && [ ! -e "$ARCH_DISK" ]
+then
+    ARCH_DISK="/dev/${ARCH_DISK}"
+fi;
+
+if [ -z "$ARCH_DISK" ] || [ ! -e "$ARCH_DISK" ]
 then
     chooseDisk ARCH_DISK "Which disk do you wish to format for installing Arch?";
 fi;