At some point, you may find a need to boot your Mac from a disc or a drive other than the primary Mac OS X startup volume. Apple made it easy so all you need to know is just a simple keyboard command.

Mac Os X Boot From Cd

Mac OS X Panther 10.3.2 - CD 691-4822-A & 691-4823-A - (Download #25). The LED on the drive never illuminated until after OS X started to boot from the hard disk. Carbon Copy Cloner your beautiful OS X to an ASR compatible Disc image with ASR options enabled. Test a restore to a spare partition. Then all you need to do in the future to restore is as follows: - Boot off a OS X mac (by firewire drive, target disk mode etc) - run NetRestore, clone from your ASR disc image - reboot into new OS X. You grab your Mac OS X CD or DVD, insert it, press the reset button, hold down the 'C' key and expect to be back up and running - but the system still refuses to properly boot.

Mac Os X 10.4 Boot From Cd

Mac Os X Boot From Cd

Let’s say you need to use the Mac OS X installation disc that came with your computer to reformat the hard drive and put it back to factory settings. Or maybe you’re trying to boot from a USB flash drive that has a clean install of OS X on it for troubleshooting purposes. Perhaps you’ve got a cloned backup of your entire Mac on an external hard drive and you want to make sure it’s bootable. These are all potential reasons for booting to an external device, among many others.

There easiest way to boot to any device other than a Mac’s internal hard drive is to press and hold the Option key immediately after hearing the Mac startup chime. Continuing to hold this button down will bring up a menu where you can select a disc or drive to boot from. Use the keyboard arrows to choose your boot device, then press the Enter key. The computer will start up from the chosen volume, but bear in mind performance will likely be much slower than when you normally operate your Mac. This is especially true of USB flash drives.


Rather than hold the Option key, you could instead just press & hold the C key if you’re booting from a CD or DVD disc. This will bypass the selection menu and immediately start from the disc. It won’t work for USB and FireWire drives, though.

Booting to another volume using either of these methods is a one-time temporary change, so you don’t have to worry about altering any settings to reverse it. Your Mac will go back to booting to it’s primary startup disk next time you reboot.

Mac Os X Boot From Disc


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Mac Os X Boot From Cd Disk

Hello everyone,
I need a help with an imac G3 (when i boot it and press command, o, f, and option it says it's a powermac2). I have a mac OS 9.2 installation disc and an OS X 10.1 installation disc (Both are CD's, not DVD's). I'm trying to put any Mac operating system on this machine and it refuses to boot from the CD-ROM drive. I do not have an external CD or DVD drive nor do I have the money and all of my other computers are PCs running various versions of Windows(not sure if a G3 will netboot from a Windows platform). I tried holding down C and it will just boot from the hard drive and go to the broken folder icon. When I press the option button when it boots all it will catch is the hard drive, which does not have a working OS on it. Is there any command I can try to set the boot device to CD-ROM drive so I can install OS 9 or X on it? I have looked all over this forum, tried just about everything that I saw. I am an advanced computer user but with average knowledge of macs. Any help would be greatly appreciated but please do not re-post any solutions already listed here.
By the way, would I be able to netboot this iMac from a windows platform?