QEMU - Install ubuntu
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Video with only the important parts edited
./qemu-img create -f qcow2 -o preallocation=full ubuntu.img 25G
./qemu-system-x86_64 -hda ./ubuntu.img -boot d -cdrom ~/Downloads/ubuntu-20.04.5-desktop-amd64.iso -m 4096 --enable-kvm
./qemu-system-x86_64 -hda ./ubuntu.img -m 4096 --enable-kvm