I am trying to build a new GitHub runner AMI using an existing Packer template that last built an image a little over a year ago. The template is using the Amazon EBS builder with AWS Session Manager (SSM) for its SSH connection:

I am what you call a complete newbie to cloud. I tried building an AMI of windows 10 pro from virtualbox VHD but it’s getting stuck at 39% forever. I heard that packer makes it really easy to make AMIs. So can anyone tell me how to make the AMI using (using vhd or iso file).