Run FreeBSD on Linux + qemu


Here are the steps to run FreeBSD on Linux + qemu.

In each explanation below, the command to be actually executed is described in the following format.

$sudo apt install package name

Actually, when you execute the above command, the progress of package installation is displayed, but these are omitted on this page.

Execution environment, etc.

Uses Ubuntu 20.04.1 LTS.

Package installation

Make the following settings on Ubuntu.

$ sudo apt install qemu-system-x86
$ sudo gpasswd -a $(whoami) kvm

FreeBSD installation

To install FreeBSD, do the following on Ubuntu:

$ mkdir -p ~/VM/fbsd122
$ cd ~/VM/fbsd122
$ qemu-img create -f qcow2 fbsd122.qcow2 16g
$ wget

Start FreeBSD with FreeBSD-12.2-RELEASE-amd64-disc1.iso.

$ qemu-system-x86_64 -enable-kvm -m 1024 -boot order=d -cdrom FreeBSD-12.2-RELEASE-amd64-disc1.iso fbsd122.qcow2

qemu-freebsd-start.png qemu-freebsd-installer.png Operate FreeBSD on the above QEMU Window.

Please refer to the following documents for the installation procedure of FreeBSD.

Please note the following two points as installation precautions.

Setting root password

During the installation, the following screen will be displayed and you will be prompted to enter the "root" password.

Registration of general users

The following screen will be displayed during installation, prompting you to register as a general user.

Operation at the end of installation

When the installation is complete, the dialog "Complete" will be displayed. Press the TAB key to select "Live CD" and press the Enter key. qemu-freebsd-complete.png When "login:" is displayed, type "root" and press the Enter key.

Boot from HDD

If you remove the "-boot" and "-cdrom" during installation and run it, FreeBSD will boot from the HDD.

$ qemu-system-x86_64 -enable-kvm -m 1024 fbsd122.qcow2

qemu-hdd-login.png For login:, type root and press Enter. qemu-hdd-password.png For "Password:", enter the "root" password that you set when you installed FreeBSD and press Enter.

FreeBSD shutdown

Log in as root, type "shutdown -p now" and press Enter to shut down FreeBSD. qemu-hdd-shutdown.png When the shutdown is complete, the QEMU Window disappears.

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