DISCLAIMER: this is not my post is only a copy, in case the original get deleted or whatever, posting on my personal blog get easier for me to find it. You can find the original one in this link at the end of the post. I recently found myself with a Windows guest for which I didn’t have the Administrator password or any way of getting it. Nevertheless, I needed to make configuration changes to it. As I had no need to recover the old password, I was looking for a way to simply replace the Administrator password with one of my choices.
So this one is pretty simple. However, I found a lot of misinformation along the way, so I figured that I would jot the proper (and most simple) process here.
Symptoms: a RHEL (or variant) VM that takes a very long time to boot. On the VM console, you can see the following output while the VM boot process is stalled and waiting for a timeout. Note that the message below has nothing to do with cloud init, but its the output that I have most often seen on the console while waiting for a VM to boot.
[106.325574} random: crng init done
Sometimes you need to change the password to an user in a qcow2 image, to test locally or if you are using an infrastructure without cloud-init, regardless the user the procedure is the same.
Depends on the system the packages name could change a little, I'm using Fedora 27 I have installed