Anyone know why I got this Terminal Error? [ERROR] The device-file for this operating system, 'osx-12.1.0.xml', was not found.

It's a bug

see update note, bottom of page:

http://osxdaily.com/2012/08/23/os-x-mountain-lion-10-8-1-update-released/

https://discussions.apple.com/thread/4234751?tstart=0

My suggestion is to do the following as this is a level 3 error so hence is non critical:

1. Open Terminal.app

2. cd /System/Library/PrivateFrameworks/CoreProfile.framework/Versions/A/Resources/De vices/

3. sudo ln -s osx-12.0.0.xml osx-12.1.0.xml

4. Enter password if asked

By adding a soft symbolic link you fool the purge command into believing the newer file exists. This type of link is non-distructive and hence if the file osx-12.1.0.xml will be overwritten if it is installed with a future update.

Use this at your own risk but it does offer a temporary fix. Its hard to say if the issue is fixed in 10.8.2 we will have to wait to find out. The fix has the benefit of preventing the annoying message about rolling back as the roll back will be done behind the scenes using the link.

Good morning mculmore,

You need to enter number 2. With only a space between cd and the path any other spaces should be removed.

Yes you hit enter and you should be in the directory of osx12.0.0.xml you can see if its there by typing ls and again enter.

The password would be your own password assuming your account is in the admin group for that machine.

After you have cd (change directory) to the correct one and you have verified the presence of osx12.0.0.xml using the ls command. You then enter the command number 3.

Yes you can undo this change if you run the following after number 2.

sudo rm osx12.1.0.xml

A fresh install would not be required as it is a basic property of the operating system. I have made the change on my own MBP and have not noticed any negative effects.

Thats correct. Yes you can type ls to verify the change you should see osx12.0.0.xml and osx12.1.0.xml. If you do see both the file and the symbolic link then congrats you did it correct 🙂

No problem. If you want to put your problem here it might be better as posting my email publicly is not something that they would like on this forum.

I'll try help you as best I can.

or you could navigate to folder through finder

/System/Library/PrivateFrameworks/CoreProfile.framework/Versions/A/Resources/Dev ices/

copy and paste file osx-12.0.0.xml and rename it osx-12.1.0.xml