Multiple shortcuts exist for the various methods of booting Leopard. These ten boot options range from essential debugging tips such as verbose and safe modes to dual booting options.
To use these boot shortcuts or commands, hold down the bolded keypress while your system is booting up. If it does not work, you probably did not start holding down the key (or key combination) soon enough.
shift – Safe Mode
Booting with the shift key depressed starts OS X in Safe Mode with Account preferences ignored and unessential kernal extensions / kexts disabled.
option – Startup Manager
Booting with the option key depressed starts OS X with the Startup Manager which allows the user to select which OS or partition from which to boot.
Mouse button – Eject Media
When the user boots with the mouse key depressed, any media in the drive such as a DVD or CD is ejected.
cmd v – Verbose Boot
If this key command is held down when booting, all the startup messages that are typically hidden will be displayed. This is an excellent method for debugging booting issues.
c – Boot from CD/DVD
Booting with the “C” key held will tell the system to boot directly from a CD/DVD in the drive.
t – Target Mode
If the “T” key is held during the bootup, the computer will be placed in target mode. This basically allows the computer to be accessed by other systems as a FireWire drive. Other computers can read, write, or mount the target mode system just like any other FireWire drive.
Other Bootup Shortcuts —
cmd s – Single User Mode
x – OS X Force boot
r – PowerBook Display Reset
n – Boot up from NetBoot Server
[courtesy:www.tech-recipes.com]
Subscribe to:
Post Comments (Atom)
Here’s a list of eleven startup key commands that every Intel Mac owner should make note of. From reseting your NVRAM, starting up in safe mode, to forcing a media to eject, this list has you covered. While some of these commands are the same as what worked for PPC Macs, others are different or completely new. Great for troubleshooting, system administration, and just furthering your general knowledge about Mac’s.
ReplyDeleteKeystroke Description
Press C during startup Start up from a bootable CD or DVD, such as the Mac OS X Install disc that came with the computer.
Press D during startup Start up in Apple Hardware Test (AHT), if the Install DVD 1 is in the computer.
Press Option-Command-P-R until you hear two beeps. Reset NVRAM
Press Option during startup Starts into Startup Manager, where you can select a Mac OS X volume to start from. Note: Press N to make the the first bootable Network volume appear as well.
Press Eject, F12, or hold the mouse (/trackpad) button Ejects any removable media, such as an optical disc.
Press N during startup Attempt to start up from a compatible network server (NetBoot).
Press T during startup Start up in FireWire Target Disk mode.
Press Shift during startup Start up in Safe Boot mode and temporarily disable login items.
Press Command-V during startup Start up in Verbose mode.
Press Command-S during startup Start up in Single-User mode.
Press Option-N during startup Start from a NetBoot server using the default boot image.
Yo dookie!
ReplyDelete