You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

10.85 Supplement now includes Mach_Kernel in HD window.

Really.


Now all 3 of my computers show a Mach_Kernel file in the Macintosh HD window which is normally hidden.


Really.


Anyone else or just my 3 computers?

iMac, OS X Mountain Lion (10.8.3), iMac 27 (12,2-mid 2011)

Posted on Oct 3, 2013 5:59 PM

Reply
Question marked as Top-ranking reply

Posted on Oct 3, 2013 6:08 PM

As an admin user, Copy/paste this into terminal, then hit return.

sudo chflags hidden /mach_kernel

It will ask for your password. Enter it, but you won't see it echo back on the screen. Just type it and hit return.

38 replies

Oct 9, 2013 12:10 AM in response to Joseph Kriz

I've just updated earlier today. After the last update a few weeks ago, my external hard drives insisted on spinning down constantly, thoroughly ignoring the Energy Saver settings, when they had been working as expected before. With this update today, I got my Time Machine disk hosed in the process, and now am the proud owner of a visible mach_kernal, too. It just doesn't get any better than this.


I wonder what the next update will have in store for surprises. Keys spontaneously leaping off of keyboards?

Oct 9, 2013 12:29 AM in response to Joseph Kriz

This is how Apple advised me to fix the Mach_Kernal issue, and it worked for me.


I called AppleCare about this situation. They are still logging all the situations and occurances as this is a new issue and is only happening for some and not others. The AppleCare Supervisor I spoke with said do not go back in and hide the terminal with code. What we ended up doing was re-installing Mountain Lion from the system itself. Shut down the machine>Restart your computer with Command-R depressed and then choosing the OS X reinstall. After that reinstall was done...the Mach_Kernal was gone. So then we ran the software update again to see if that same "supplemental update" was there. Ironically, the supplemental one was not but was for another. It was one that just updated Digital Photos and the Airport.

The supervisor said the "Supplemental Update" is only intended for the Macbook Air. Why or how my 21.5" desktop iMac got that update they don't know. They are actively searching how that happened. So with that step I'm fully updated and the Mach_Kernal is out of site and in the correct place.


If you have any questions...call the AppleCare people. The more calls they get the bigger issue it becomes and then they solve it. I asked the technician if anyone even reads our community boards. He said yes when they get a chance. But it's impossible to read and log everything someone posts. He said the more people who call into AppleCare..that officially opens a case # and then its sent to the technical dept.


I told him there must be something going on with the App Updates and with different devices connected to it, the iCloud, backup systems. Possibly some updates are being pushed to the wrong places computers somehow.


That's my advice to everyone. Call into AppleCare to open an official complaint...and they'll walk you through it as they did me since I'm a novice at this. it doesn't really do any good complaining about it here and the "bug reports" you can email are secondary to people calling into AppleCare filing official reports, etc. In fact I was so pleased the supervisor gave me his name and direct number in case something went wrong or that file somehow appeared again.


Good Luck!

10.85 Supplement now includes Mach_Kernel in HD window.

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.