Immutable OSes (Score 2)

Bah. Back around the turn of the century I constructed the most hack-proof OS install ever. My FreeBSD-running-Squid solution mounted the entire OS off of a CD-ROM, created a 2MB RAM disk, mounted it as /etc and copied the entire /etc directory from floppy disk. After booting, it unmounted the floppy disk and I called the NOC to eject it, creating a 1cm air gap between the read-write heads of the floppy drive to the floppy disk contents. The collocation space and bandwidth were free and the floppies and CD-Rs cost $.10 each. If I ever suspected rootkits I would just shut the machine down as I had half a dozen of these 1U servers, at $100 each off eBay! Take that cloud computing and McAfee ROMs!