diff --git a/prepar_qcow_root.md b/prepar_qcow_root.md
index 9713a0d..ade4c50 100644
--- a/prepar_qcow_root.md
+++ b/prepar_qcow_root.md
@@ -61,7 +61,10 @@ qemu-system-x86_64 \
     -serial mon:stdio \
     -monitor unix:/tmp/vm-build.mon-sock,server,nowait \
     -drive file=/opt/seed/${os}_seed.iso,media=cdrom,if=ide \
-    -drive file=${disk_dir}/${os}-tmp.qcow2,format=qcow2,if=virtio \
+    \
+    -drive file=${disk_dir}/${os}-tmp.qcow2,format=qcow2,if=none,id=vda \
+    -device virtio-blk-pci,drive=vda,bootindex=0 \
+    \
     -device virtio-scsi-pci,id=scsi0 \
     \
     -drive file=${disk_dir}/${os}-root.qcow2,if=none,id=hd0 \