Select an operating system and let Boxes download and install it for you in a virtual machine.
Features:
Awesome! Flatpak version works, while normal freezes (and virtualbox doesnt even work)!
It simply wont work with any ISO key that isnt from a famous system already registered on the aplication. And I dont know why.
Great! Super easy, but doesn't boot the VM after installing if I set it to UEFI, only if there is no option to use legacy BIOS.
The problem is that it's a flatpak, and you have to use flatseal to give it access into / and /home. But as a VM it's totally ok
I really wanted to get this working. Sadly, with flatpack out of the box it doesn't allow /mnt so unable to use external drive without setting up exceptions. Then after launching I'm given the message "Virtualization extensions are unavailable on your system." This seems to because the flatpack isn't able to install kvm and add users to that group. The final blow came when I tried to customize my VM to where it was trying to store the files. No where in the GUI does it allow you to see, move or change this. Will keep an eye on it for the future, but right now just too basic and broken to use.
Couldn't create a Manjaro VM, from an iso where I successfully verified the SHA1sum. Vague error message, then it "helpfully" deletes the VM again for you, when you restart Boxes! Huge waste of time! Abysmal.