OMG - just installed some Microsoft updates on my Primary Snapshot & now when I reboot, my PC is trashed -- can't access anything due to message saying can't find path & I might not have permissions, etc. And nothing shows in Task Manager, either. So booted into my Secondary snapshot and all is well again. Since I anchored My Documents, I didn't lose a very important registration doc I needed & had saved in My Documents. Just lost some unimportant emails is all. I am so impressed. But can I fix my Primary Snapshot is the question. But do I care because within seconds my PC was up & running due to this ingenious software. I'm off to create a copy of this working snapshot just in case I trash this one next.