Small linuxes
I'm evaluating small linuxes, and have found two in the 10MB range: ttylinux and Tiny Core Linux. I have played a bit with tty, and will se what Tiny core can do.
Update: I have now tried Tiny Core and it crashed and burned through my VirtualBox and took down the entire laptop. Powerful stuff.
ttylinux, a small GNU/Linux system available for several CPU architectures. This small system has an 8 MB file system and runs on i486 computers within 28 MB of RAM, but provides a complete command line environment and is ready for Internet access.
Read more: ttylinux homepage
Tiny Core Linux is a very small (10 MB) minimal Linux GUI Desktop. It is based on Linux 2.6 kernel, Busybox, Tiny X, and Fltk. The core runs entirely in ram and boots very quickly. Also offered are Micro Core, a 6 MB image that is the console based engine of Tiny Core, and Multi Core, which includes Tiny Core, Micro Core, networking tools and an installe
Read more: Tiny Core Linux, Micro Core Linux, 10MB Linux GUI Desktop, Live, Frugal, Extendable