Comment by wslh

SqueakNOS was a project to build a complete operating system via Squeak. In this way you can quickly hack it. There is a great page about these initiatives here: http://wiki.squeak.org/squeak/5727

Prior to SqueakNOS we implemented this: http://swain.webframe.org/squeak/floppy/ (using Linux and modifying Squeak to work with SVGALib instead of X) in just 900mb inspired in this QNX Demo Disk.