osx crashed and wont start up


was running osx for maybe a week without any problems at all. classic was fine worked with all my games old apps etc. then i played f/a-18 korea 1.1 and it died. could not quit, force quit, Apple-tab, or even power down. When i pushed the little triangle to reboot, it didn't. it looks for a startup disk and keeps going to the dvd rom. used the option trick to find the bottable drives while i had my os9 cd in. and it still did the same thing, except after three tries it would go to the os9 cd and try to boot up but it would crash in the middle of startup. used option again to start from the os9 cd and it works, just cant use osx or 9 from the hardrive.