I forgot root password on my old IRIX / SGI Octane2 and had to "crack" it a few months ago. Turned out it was using full eight characters and was on the tail-end of the alphabet. It took less than a day to guess it on an older two-gpu 680GTX machine with cudaHashcat. Also, how awesome of IRIX guys was to not allow more than 8 characters in a password?
Some of the answers on that page suggest it changed around 2000, and SGI Octane 2 was still being sold in 2004(?), but I don't know how rapidly systems changed.
