Have a newer OS? For those running 10.6 or above, I have created a newer (simpler) video guide - https://www.youtube.com/watch?v=CJ6AZMk2cy0
Process 1 -
mount -uw /
launchctl load /System/Library/LaunchDaemons/com.apple.DirectoryServices.plist
Radial Basis Function Networks are not talked about a lot these days, but they are very interesting and useful.
Handwriting demo: http://macheads101.com/demos/handwriting/?c=rbf
Resizing images with RBF networks: https://github.com/unixpickle/rbfscale#r...
Mounting drives in single user mode: http://www.insanelymac.com/forum/index.php?showtopic=232365
How Pixar almost deleted Toy Story 2 with rm * :http://www.youtube.com/watch?v=EL_g0tyaIeE
*WARNING: IMPROPER OR CARELESS USE OF ROOT PRIVILEGES IN MAC OS X...
I show you how to make a hidden user
change . UniqueID 503 403
defaults write /Library/Preferences/com.apple.loginwindow Hide500Users -bool TRUE
Done with terminal!...
This is what happens to an installation of Mac OS X when invoking sudo rm -fr / from the command line in single user mode. This is meant only for informative purposes only and should never be done on a system you don't mean to completely hose! Enjoy....
Here's a video tutorial on how to backup and restore ROM using CWM Recovery on Galaxy S4 with root.
Step-by-Step instructions with photos here: