TOPIC
This article describes what has happened, and what to do, when the following white screen appears on an iMac that is starting up:
DISCUSSION This screen is the iMac Open Firmware screen. Beginning with Power Macintosh computers with PCI slots, Power Macintosh computers rely on a firmware operating system called "Open Firmware" for controlling hardware. Open Firmware is a cross-platform firmware standard for controlling hardware and is used by all PCI-based Mac OS computers. Open Firmware is used mainly by Apple hardware developers. There is very little need for iMac users to ever need to start up into Open Firmware. Although it is fairly difficult to mistakenly start up into Open Firmware, you may accidentally start up into Open Firmware by holding down the Command-Option-O-F keys at restart or power on before any video is displayed on the screen. The iMac should never start up into Open Firmware on its own. If you are at the Open Firmware screen and want to start up into Mac OS, simply type " mac-boot " without the quotes at the command prompt and press Return to exit Open Firmware. The iMac should exit Open Firmware and continue starting up into Mac OS. |
Document Information | |
Product Area: | iMac |
Category: | iMac Software |
Sub Category: | Troubleshooting |
Keywords: | hts, kimac |
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