Use a custom operating system

How to set up and use a custom operating system as a boot and/or disk image.
The Pi 1 and Pi 2 modes support the use of different Operating Systems, E.g Raspbian, and possibly ArchLinuxARM.

There are currently three types of boot disk/disk images available; one from 2012, one from 2014/5 (Raspbian Jessie), and one from 2017 (Raspbian Stretch). They are verified to be working*
Some disk images may not work; it is recommended that the provided disk images are used.

Start by clicking on "Boot disk" in the Config menu item.

Select "use a custom operating system"

Download and install OS X FUSE (, or use Paragon-Software's ExtFS for Mac OS X, which is much more polished.

Once FUSE is installed;
1. Mount your boot-disk image (with FUSE)
2. Open the drive that is not 'boot' (probably 'root', or 'rootfs').
3. Within the folder from step 3, open folder 'etc', and open text file '' with TextEdit.
4. Remove the first line in the file (there should only be one line), or comment it out.

5. Go to 'etc' and then within, 'udev'.
6. Create a new file, '90-qemu.rules'
7. Copy the following text into the file. (no spacing, only newline)
KERNEL=="sda", SYMLINK+="mmcblk0"
KERNEL=="sda?", SYMLINK+="mmcblk0p%n"
KERNEL=="sda2", SYMLINK+="root"

Once the images have been modified, and unmounted (removed from /Volumes or the Finder sidebar), click on "Modify", and follow the steps of adding your newly created/modified boot disk!

*There is always a possibility that one doesn't work as intended - if so, please contact me at
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