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Host: Devuan Excalibur
$ qemu-img create -f qcow2 devuan-excal-live-storage.qcow2 10G
$ qemu-system-x86_64 -enable-kvm -m 2048 -nic user,model=virtio -drive file=devuan-excal-live-storage.qcow2,media=disk,if=virtio -cdrom install-images/devuan_excalibur_6.1.1_amd64_desktop-live.iso
I see the boot menu and i let it boot with its default.
If i choose fail safe it proceeds ok and i login with username : devuan.
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I get the same result when I use your command. Remove the '-nic user,model=virtio' and it works.
Note: I did not include the '-drive file=...' part in my test, so I don't know if that would also need to be changed. I use raw disk images and don't use virtio. e.g. -drive file=${image_file},format=raw
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