In addition to a power button, some Macintosh models have one or two other buttons: a reset button and often an interrupt, or programmer's, button. The former is typically used to recover from crashes that leave the system unresponsive, while the latter is for debugging and applying firmware updates. Where they appear on your computer, or even if they do, depends on which model you have. For more information, see the following...

So you got a Mac OS X installer disk image (.iso, .toast, .cdr, .dmg) and would like to boot your PowerPC (G3, G4, G5) from it in order to install OSX, but unfortunately, the DVD drive on your old Mac is broken, missing or you're simply out of DVD discs? You instead went ahead and proceeded to boot your PowerPC Mac from an USB stick but it didn't work because the old Mac's USB ports are broken or the Open Firmware command fails for...

To boot any* PowerPC Mac (e.g. an iMac G3, an iBook G4, a PowerMac G5, etc...) from an USB stick or drive, FIRST know that if your model is 300mhz or faster, then first refer to the boot from CD guide and if it does not work, then follow these instructions: * The Lombard PowerBook G3 cannot boot from USB Follow these steps IN ORDER: 1. Completely power off (not restart) the Mac, then connect your USB stick/drive in a root USB port on...

So you've acquired or burned a Mac OS install CD or you made yourself a custom boot disk and would like to boot from it but when you insert it in your Mac and power it on, it always boots from the hard drive? Then here's how to access the PPC boot selection screen...   You can boot any PowerMac starting from the first Clamshell iBook G3 (fall of year 2000) from a removable media by turning it on and immediately holding down...

Under Mac OS 9 and earlier, all the way back to the first Mac OS versions in the 1980's, you could display a custom boot picture in the background while Mac OS was loading. To do this, you do NOT need to alter/edit any system files at all.  All you need to do is to save a copy of your desired startup picture into a specific format and place it in your System Folder. Note: System 6 and earlier only supports black & white...

If you need instructions on how to make a USB flash drive for this tutorial, one for creating it on Windows can be found here. Creating the USB drive on a Mac running OS X is as simple as restoring an image with Disk Utility. The Leopard disc image used in this tutorial can be found here. Note: This tutorial assumes you have already created a bootable USB drive containing Leopard. 1. Shut down your PowerPC Mac. 2. Plug in your Leopard...

.contentblock TD{ border:1px solid #CCC; padding:3px; font-size:13px; } .contentblock TH { white-space: nowrap; color: #999; } Listed below is a table of all the keyboard key combinations you can use on almost all PowerMacs (G3, G4, iMacs, iBooks, eMacs, etc...) originally listed at: http://davespicks.com/writing/programming/mackeys.html   You can also download the PDF file.     Table of contents On Boot After...