diff --git a/README.md b/README.md
index b6d14fc..d0eb4fc 100644
--- a/README.md
+++ b/README.md
@@ -11,12 +11,17 @@ You can pass `qemu` flags (see `QEMU(1)`) to `./run.sh` directly or you can
 make theses flags permanent by editing `run.sh` (this VM only) or `lib.sh` (all
 VMs).
 
+### Headless
+
+For a headless VM, just remove the `-vga` and `-audio` flags from `lib.sh`.<br>
+To start the VM in the background: `./run.sh & disown`
+
 ### CPU/RAM limit
 
 The CPU flag is not set by default, see `QEMU(1)` for default values.<br>
 Default RAM flag: `-m "2G,maxmem=$((HOST_RAM - 2))G"`.
 ```
-./run.sh -smp "$NB_CPUS,maxcpus=$MAX_CPUS" \
+./run.sh -smp "${NB_CPUS},maxcpus=${MAX_CPUS}" \
          -m "${RAM}G,maxmem=${MAX_RAM}G"
 ```
 
diff --git a/lib.sh b/lib.sh
index 99f0554..d76a796 100644
--- a/lib.sh
+++ b/lib.sh
@@ -55,21 +55,21 @@ function _getnet() {
 }
 
 function qemu() {
+    local ram=2G
     local maxram; maxram="$(_getmaxram)"
     local net; net="$(_getnet)"
 
     (set -x
         qemu-system-x86_64 -accel kvm \
             -M q35 \
-            -bios /usr/share/ovmf/x64/OVMF.fd \
             -cpu host \
-            -m "2G,maxmem=$maxram" \
+            -m "$ram,maxmem=$maxram" \
             -vga virtio \
-            -drive if=virtio,file=hda.qcow2 \
             -audio pipewire,model=hda \
+            -drive if=virtio,file=hda.qcow2 \
             -nic "model=virtio-net-pci,type=$net" \
             -device qemu-xhci \
-            -object memory-backend-ram,id=mem,size=2G,share=on \
+            -object "memory-backend-ram,id=mem,size=$ram,share=on" \
             -numa node,memdev=mem \
             "${OPTS[@]}" \
             "$@"