Detect drive first

src/freedombone-config

     GPG_CTR=0
     while [[ $GPG_LOADING == "yes" ]]
     do
-        if [ ! -b $GPG_USB_DRIVE ]; then
+        detect_usb_drive
+
+        if [ ! -b $USB_DRIVE ]; then
             if (( GPG_CTR > 0 )); then
                 reconstruct_key
                 return 0
             exit 739836
         fi
 
-        detect_usb_drive
-        GPG_USB_DRIVE=$USB_DRIVE
         GPG_USB_MOUNT='/mnt/usb'
         umount -f $GPG_USB_MOUNT
         if [ ! -d $GPG_USB_MOUNT ]; then
             rm -rf /dev/mapper/encrypted_usb
         fi
         cryptsetup luksClose encrypted_usb
-        cryptsetup luksOpen $GPG_USB_DRIVE encrypted_usb
+        cryptsetup luksOpen $USB_DRIVE encrypted_usb
         if [ "$?" = "0" ]; then
-            GPG_USB_DRIVE=/dev/mapper/encrypted_usb
+            USB_DRIVE=/dev/mapper/encrypted_usb
         fi
-        mount $GPG_USB_DRIVE $GPG_USB_MOUNT
+        mount $USB_DRIVE $GPG_USB_MOUNT
         if [ ! "$?" = "0" ]; then
             if (( GPG_CTR > 0 )); then
                 rm -rf $GPG_USB_MOUNT