Cancel Installation

Restart or shut down your computer, either in the normal fashion or by holding down the power-on button for several seconds, and then hold down the Option key when restarting - you should see a choice between the MacOS and Windows (if Windows is still operative) and you will then be able to start up in OSX.

Bob N.

hey gang, have same problem and tried to restart with button and hold down option key on bottom row of keyboard and still tries to install windows from disk that won't eject either. get stuck on install cuz using a upgrade disk instead of full and wants to verify previous windows install and won't eject. HELP!!!!!!!!!

nevermind all, looked deeper into archives and saw that the wireless keyboards work intermittenly so thats why I could never hold down options key to get a boot choice. ended up holding options key and kept pressing power key on keyboard to keep constant conectivity to computer. was actually told to hookup usb keyboard to get option but tried power button on existing first and it worked

Just to add a few more details to this... those of you who (like me) do not have a USB-MAC-keyboard hanging around, you can click and hold the ALT key on a normal keyboard to bring up the boot menu too. It will only give you the choice of MAC OS X (in my case my WinXP install disc was not-bootable), so you can startup normally and eject...

If you do cancel - depending on 'where' - you may end up with zilch and even Mac partition gone and unbootable.