diff --git a/documents/Installing.md b/documents/Installing.md
index 1bcd0c0a588a905b76c60b092e9b012073e16d42..41fdddcf94cc7cf5dd368ea4e4578ccbc0220c06 100644
--- a/documents/Installing.md
+++ b/documents/Installing.md
@@ -34,7 +34,8 @@ $ qemu-system-riscv64 \
   -device virtio-rng-device,rng=rng0 \
   -device virtio-blk-device,drive=hd0 \
   -device virtio-net-device,netdev=usernet \
-  -netdev user,id=usernet,hostfwd=tcp::12055-:22
+  -netdev user,id=usernet,hostfwd=tcp::12055-:22 \
+  -append 'root=/dev/vda1 rw console=ttyS0 systemd.default_timeout_start_sec=600 selinux=0 highres=off mem=4096M earlycon'
 ```
 当系统启动之后，可以通过ssh登陆guest OS
 ```