Im trying to reset my ibook g4. when I hit command s all I get is a black screen. is there another way?

Im trying to reset my ibook. When I hit command s all I get is a black screen. And command r does not work.

There are some references, over a period of time, for some vintage
hardware models of Apple computers covering older software and
the keyboard commands haven't changed all that much. Some are
more directed at later OS X versions, in recent reference sites...
•OS X Keyboard Shortcuts:
http://support.apple.com/kb/HT1343
•Magical Macintosh Keyboard Sequences: (2004)
http://davespicks.com/writing/programming/mackeys.html
•TUAW Tip: keyboard shortcuts during OS X Startup: (2006)
http://www.tuaw.com/2006/03/27/tuaw-tip-keyboard-shortcuts-during-mac-os-x-start up/
Why were you trying to start in Single user mode or Command-line?
Do you have the OS X system install-restore DVDs?
Good luck & happy computing!

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