I made the mistake of setting my Intel iMac to boot from my DiskWarrior 4 disk. I'm not quite sure why I did this instead of just holding C like I usually do, but I'll sure as hell never do it again! I couldn't eject the disc or boot back to the system. I scoured the Internet from my phone and tried the many suggestions I could find:
- Holding Option while restarting
- Holding the left mouse button while restarting
- Pressing the Eject button while restarting
- Messing about in the drutil window
Unplug everything from the computer except the wired keyboard (connecting directly) and the power cable. Then hold the Option key on restart. Finally! This let me select the hard drive instead of the DVD.