Hi,<P>Can we post all of the various key combinations that work at boot?<P>For example:<P><B>Openfirmware:</B><BR>press _X_ + _X_ when you see _X_ to enter openfirmware command prompt<BR>press ...

When Apple Computer Inc. introduced Open Firmware with the first G3 Macintosh computers, it was big news because it allowed Apple to easily modify system information previously stored in ROM. This ...

A minor puzzle arrived from a reader who was trying to choose his boot drive by holding down the Option key at startup. OS X has a variety of keyboard combinations you can press to invoke different ...

If you are a 17" flat-panel iMac owner who is experiencing problems with login at startup when an Ethernet connection is active (startup stalling at the blue screen and delivering an ever-spinning ...

With the release of the first Apple silicon Macs, Apple dramatically reduce troubleshooting modes and key sequences from what was previously available. Since the company no longer has to integrate ...

Safe mode is an important troubleshooting tool. It boots the OS in such a way that it uses the bare minimum files and apps to start and run. This can help you isolate issues, figure out where problems ...

Apple Silicon Macs will introduce a new system for accessing macOS recovery and security options at startup, Apple explained at a WWDC session on Wednesday. The new Startup UI on ‌Apple Silicon‌ ...

While users may never want to have to rely on them, it's comforting to know that PCs running modern operating systems have fail-safes and recovery modes that can help get the system back up and ...