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How To Use Single User Mode And How To Use It To Uninstall Kexts


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The following guide will allow you to uninstall a kext using Single User Mode during boot when a kext that you have recently installed is causing your system to not boot. The installation VodooHDA.kext on some systems is a example of a kexts that may make your system to not boot.




Giorgio Multi post found here

Wiki post found here

Edited by p.H and Rampage Dev


Method 1: Mac OS X Using Single User Mode


Part 1: What Is Single User Mode


Single User Mode is different from a Safe Mode boot in that the system goes directly to the console instead of starting up the core elements of Mac OS X (items in /System/Library/, ignoring /Library/, ~/Library/, et al.). From there users are encouraged by a prompt to run fsck or other command line utilities as needed (or installed).


Part 2: How To Boot Into Single User Mode


1. Record the kext you wish to remove


2. At the boot loader prompt screen type in the following:





3. Press Enter



4. After the system loads a blinking cursor will appear. This indicates that you may start typing in commands.


5. Replace name_of_the_kext.kext with the name of your kext you wish to remove


6. Type the commands below, press enter after finish entering each line:



mount - uw /
cd /System/Library/Extensions
rm -rf name_of_the_kext.kext
sudo rm -rf /System/Library/Caches/*
shutdown -r now





Note Make Sure That The Spaces And Casing In The Text Is Correct



7. The kext should now be removed


Method 2: Using Windows Or Other Operating System


You can remove a kext by using macdrive or other programs which allow you to access the OS X partition. All you need to do is just delete the entire folder of the kext. (kexts are displayed as folders on windows or other OS)

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