diff --git a/OpenCore-Boot.sh b/OpenCore-Boot.sh
index fa94855..5cbf8f9 100755
--- a/OpenCore-Boot.sh
+++ b/OpenCore-Boot.sh
@@ -9,6 +9,9 @@
 #
 # echo 1 > /sys/module/kvm/parameters/ignore_msrs (this is required)
 
+DISK_IMAGE=mac_hdd_ng.img
+DISK_FORMAT=qcow2
+
 ############################################################################
 # NOTE: Tweak the "MY_OPTIONS" line in case you are having booting problems!
 ############################################################################
@@ -50,7 +53,7 @@ args=(
   -device ide-hd,bus=sata.2,drive=OpenCoreBoot
   -device ide-hd,bus=sata.3,drive=InstallMedia
   -drive id=InstallMedia,if=none,file="$REPO_PATH/BaseSystem.img",format=raw
-  -drive id=MacHDD,if=none,file="$REPO_PATH/mac_hdd_ng.img",format=qcow2
+  -drive id=MacHDD,if=none,file="$DISK_IMAGE",format="$DISK_FORMAT"
   -device ide-hd,bus=sata.4,drive=MacHDD
   # -netdev tap,id=net0,ifname=tap0,script=no,downscript=no -device virtio-net-pci,netdev=net0,id=net0,mac=52:54:00:c9:18:27
   -netdev user,id=net0,hostfwd=tcp::2222-:22 -device virtio-net-pci,netdev=net0,id=net0,mac=52:54:00:c9:18:27