diff --git a/README.md b/README.md
index cca0cca..c8dba59 100644
--- a/README.md
+++ b/README.md
@@ -17,6 +17,17 @@ docker build -t docker-osx .
 
 docker run --privileged -v /tmp/.X11-unix:/tmp/.X11-unix docker-osx
 
+# press ctrl G if your mouse gets stuck
+
+```
+
+# Start the same container later (persistent disk)
+```
+# look at it
+docker ps --all --filter "ancestor=docker-osx"
+
+# boot my old one
+docker start $(docker ps -q --all --filter "ancestor=docker-osx")
 ```
 
 # Additional Boot Instructions
@@ -36,6 +47,16 @@ docker run --privileged -v /tmp/.X11-unix:/tmp/.X11-unix docker-osx
 ```
 
 
+# Wipe old images
+
+```
+# WARNING deletes all old images, but saves disk space if you make too many containers
+docker system prune --all
+docker image prune --all
+
+```
+
+
 # Instant OSX-KVM in a BOX!
 This Dockerfile automates the installation of OSX-KVM inside a docker container.