Minimalist installation of OpenBSD on the Apple M2 using QEMU
- Apple M2 running macOS Sonoma 14.4.1
- QEMU version 8.2.1
- OpenBSD 7.5 arm64
- install QEMU with Homebrew
brew install qemu, also possible with MacPorts - Write a script with execute permissions
chmod +x qemu_aarch64_install_openbsd.shfor installing the image.- Download the OpenBSD installation image
- Create an image of the OpenBSD drive
- Getting the edk2-aarch64-code
- Installing
#!/bin/sh -
curl https://ftp.eu.openbsd.org/pub/OpenBSD/7.5/arm64/miniroot75.img -o miniroot75.img
curl https://ftp.openbsd.org/pub/OpenBSD/7.5/arm64/SHA256 -o SHA256
shasum -c --ignore-missing SHA256
qemu-img create -f qcow2 obsd_aarch64.qcow2 32G
qemu-system-aarch64 \
-M virt \
-cpu host \
-accel hvf \
-smp 4 \
-m 4096 \
-nographic \
-serial mon:stdio \
-bios /opt/homebrew/share/qemu/edk2-aarch64-code.fd \
-drive file=miniroot75.img,format=raw,if=virtio \
-drive file=obsd_aarch64.qcow2,format=qcow2,if=virtio \
-netdev user,id=mynet0,hostfwd=tcp::7922-:22 -device virtio-net,netdev=mynet0
rm miniroot75.img SHA256
-
Follow the OpenBSD installation program, please notice the remarks at the end of this document:
-
When the installation is done,
pkill qemu-system-aarch64
like this:
qemu-system-aarch64 \
-M virt \
-cpu host \
-accel hvf \
-smp 4 \
-m 4096 \
-nographic \
-bios /opt/homebrew/share/qemu/edk2-aarch64-code.fd \
-drive file=obsd_aarch64.qcow2,format=qcow2,if=virtio \
-netdev user,id=mynet0,hostfwd=tcp::7922-:22 -device virtio-net,netdev=mynet0
-
there is a problem with the DNS if the network interface (vio0) is on
autoconfso is better configure it manually, have a look at QEMU's User Networking, for instance IPv4 would work on10.0.2.15/24and10.0.2.2gateway. -
alternatively a full image
installXX.imginstead ofminirootXX.imgwould work. -
for the lazy asses, like me, it is possible to do autoinstall(8) with an
install.confon your localhost like this one:System hostname = myHost IPv4 address for vio0 = 10.0.2.15 Default IPv4 route = 10.0.2.2 DNS nameservers = 1.1.1.1 8.8.8.8 Password for root = RootsPassword Setup a user = myName Password for user = myPassword Public ssh key for user = ssh-ed25519 AAA...318C [email protected] What timezone are you in = YOUR/TIMEZONE Which disk is the root disk = sd1 Location of sets = http HTTP Server = ftp.eu.openbsd.org URL to autopartitioning template for disklabel = http://10.0.2.2/openbsd-pgdb.disklabelalso possible to define the disk partition adding
openbsd-pgdb.disklabelon your localhost like this one:/ 0.3G swap 2M 10% /altroot 0.3G /tmp 120M-4G 8% /var 3G 13% /usr 0.9G-3G 5% /usr/local 3G-7.5G 10% /home 9G-* 45%
@ast3k Thank you for you help!