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Thread: Mac OS X, Apple

Author Image Gerry Patterson. The world's most humble blogger
One world --- Or none!

Single User Mode For A Mac

Chronogical Blog Entries:

Date: Mon, 09 Jun 2008 22:06:02 +1000

Not too long ago, I had a problem with my Mac Pro, and I wanted to start it up in single user mode.

Problem was, all the documentation for the Mac was on the Mac! So how does one starup in Single User Mode?

Of course, Google gave me the answer. Here it is:

For earlier versions of Mac OSX (prior to Leopard), it was possible to manually start some components, using the following daemons:

Since 10.5 (Leopard), most startup is performed by the launchd daemon. This daemon is started by launchctl. The setup files are XML file with a .plist extension in the folder /System/Library/LaunchDaemons/. So, with the most recent version of OS X, one would use the following code to start the kextd and configd daemons:

# start the kextd daemon
launchctl load /System/Library/LaunchDaemons/
# start the configd daemon (mostly networking)
launchctl load /System/Library/LaunchDaemons/

Generally speaking, it is not advisable to try starting these services manually from single user mode. If for some reason, it is necessary to do so, it might be safest to reboot when the maintenance tasks have been completed.

Note: To force the Mac to boot from the CD drive, press the "c" key immediately after Power On ... (Assuming you have a bootable DVD or CD in the drive).

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Copyright     2008, Gerry Patterson. All Rights Reserved.