Each tuple contains an image of the root filesystem, initrd.img and vmlinuz files.
qemu-system-aarch64 -name final-buster-arm-64 \
-smp 4 -m 1200M -M virt -cpu cortex-a57 \
-initrd initrd.img \
-kernel vmlinuz \
-append 'root=/dev/sda1 console=ttyAMA0' \
-global virtio-blk-device.scsi=off \
-device virtio-scsi-device,id=scsi \
-drive file=debian-arm64-final.qcow2,id=rootimg,cache=unsafe,if=none -device scsi-hd,drive=rootimg \
-drive file=ephemeral.qcow2,id=ephemeral,cache=unsafe,if=none -device scsi-hd,drive=ephemeral \
-netdev user,hostfwd=tcp::22022-:22,id=net0 -device virtio-net-device,netdev=net0 \
-nographic