diff --git a/basic.sh b/basic.sh
index 5902877..108e29f 100755
--- a/basic.sh
+++ b/basic.sh
@@ -24,5 +24,5 @@ qemu-system-x86_64 \
     -device ich9-ahci,id=sata \
     -drive id=ESP,if=none,format=qcow2,file=ESP.qcow2 \
     -device ide-hd,bus=sata.2,drive=ESP \
-    -drive id=InstallMedia,if=none,file=BaseSystem.img \
+    -drive id=InstallMedia,format=raw,if=none,file=BaseSystem.img \
     -device ide-hd,bus=sata.3,drive=InstallMedia \