https://chrisjean.com/fix-apt-get-update-the-following-signatures-couldnt-be-verified-because-the-public-key-is-not-available/ https://people.debian.org/~aurel32/qemu/armhf/ https://blog.geunho.dev/posts/docker-old-os-editor/ 블로그 3개만 참고하면 뚝딱! qemu-system-arm -M vexpress-a9 -kernel vmlinuz-3.2.0-4-vexpress -initrd initrd.img-3.2.0-4-vexpress -drive if=sd,file=debian_wheezy_armhf_standard.qcow2 ..