RUNT Linux 5.0
RUNT (ResNet USB Network Tester) is Slackware Linux designed to run off of a 128 MB USB pen drive.
It is intended to be a fairly complete Linux installation for use as a testing tool capable of booting on any x86 computer with a USB port and a bootable floppy drive. RUNT 0.92, the initial version, was released November 27, 2002. Version 4.0 was released November 11, 2004.