$ brew install qemu
$ qemu-img create -f qcow2 <qcow2 disk image> <size>
$ qemu-system-x86_64 -m <memory size> -boot d -cdrom <boot cdrom iso> <qcow2 disk image> -net nic -net user -vnc :1,password -monitor stdio -k ja
(qemu) change vnc password
Password: ****
vncで↑のパスワードでつなぐ