The short answer is any. KVM is built in to the kernel. You can run VMM (Virtual Machine Manager) for a simple, easy GUI, but you can also manually edit the VM files if that's your thing. You can air gap them by creating a bridge that doesn't bind to a nic.
Anything debian (which includes ubuntu based) just run
The much longer answer is, it really depends on your needs for a daily driver, not for virtualization. Figure out what you need for a dd, then use that and install the tools.
The short answer is any. KVM is built in to the kernel. You can run VMM (Virtual Machine Manager) for a simple, easy GUI, but you can also manually edit the VM files if that's your thing. You can air gap them by creating a bridge that doesn't bind to a nic.
Anything debian (which includes ubuntu based) just run
See: https://youtu.be/FNcImbM8ugg
The much longer answer is, it really depends on your needs for a daily driver, not for virtualization. Figure out what you need for a dd, then use that and install the tools.