to commonly asked questions.


When is screen time for the Mac coming?

When will screentime be available for the Mac? I'm sending my child off to boarding school soon and I want to be able to limit his computer use.

Screentime will be available on laptops when MacOS Catalina is released publicly. Right now the Apple is only saying “this Fall” so we don’t have a concrete commitment for a date yet. Screentime on the mac has been a long awaiting improvement and there are many parents awaiting its arrival. I see you scheduled for Aug 23th. It will not be available prior to your son’s departure for school. My guess is last week of September through Oct 31st is when it will release. If you need to reschedule the session, you can do so via the link provided in the confirmation email. let me know what questions you have.

Why can't I install Mojave on an external drive?

1) Upgraded to Mojave
2) Found an old 1TB external HD. Wiped and reformatted. For some reason I get this error message every time I try to install Mojave on it. It gets all the way through and just before it says it has to reboot, I get this. Have tried several times and rebooted in between and always get this.



I would first try opening disk utility, and with no other drives connected, reformat that target drive. You can use MacOS extended Journaled. Then try the install once again.

You can also try throwing that installer away (located in the applications folder) and redownloading it.

Also, make sure the operating system you are currently on is equal to the version you are trying to install.

Lastly, if neither of those work, you an create an installer on a separate external drive like a flash drive (you'd need at least an 8 gig thumb drive). There is a built in terminal command that allows you to create an installer. Then you'd boot to the external flash drive to install on the other drive. More here: How to create a bootable installer for macOS - Apple Support

Is Mojave ready?

Are you wanting us all to upgrade to Mojave or wait. I’ve been looking for a memo from you on this but have not seen one yet.

As of today, 10/24/18 Mojave is still in its .0 release. 10.14.0 So stay away until at least the .1 update which should be any day. They've done about 5 updates in the Beta in the last two weeks prior to issuing 10.14.1 so I'd say next week will be fine.

Can I go from Snow Leopard to El Capitan?

Can I go from 10.6.8 to 10.11?

Yes. Apple allows a jump that large but you can't jump from 10.6 to 10.12 or higher. Also, 10. does have to be completely up to date first as well. (10.6.8) However, if you've not previously downloaded 10.11 from the App Store, Apple doesn't make older operating systems available. Still possible. You just have to obtain a copy of the prior operating system.

Can't delete a user in High Sierra


I migrated an old user after I accidentally created a new user with the same name when I bought a new mac. Now I can't delete the other user. It's greyed out in the Users & Groups.

I've seen this issue now several times. A couple of ways to solve this. Wipe the drive and start the migration over again or swap the GeneratedUID. This is not something for you to do if you are not 100% confident in your abilities. Make a backup and proceed with extreme caution:

  1. Go to Directory Utility
  2. Enable Root
  3. In Directory Editor, search for the user to be deleted.
  4. Copy the UID to a textedit doc then change the UID by one number
  5. Save
  6. Search for the currently logged in user (the user to be kept)
  7. copy the UID for this user into the text doc just to be safe.
  8. now replace it with the first UID number.
  9. Open terminal and run `diskutil apfs updatePreboot disk1a1`
  10. Restart and log in as the remaining user. Pray.

Original credit goes to Ambrose Little over at

Where's my powermanagement plist file?


Where did my powermanagement plist go? It's no longer in the system configuration folder.

Correct. Ever since Sierra and later it looks like Apple has moved some plist files around. You can now find the power management.plist file just outside of the system configuration folder. in Library/Preferences. In addition, the boot.plist and CaptivenetworkSupport folder are also no longer disposable. They are protected by the OS. I don't think even Root can toss them. Here's a great article listing all the current locations of important plist files. Another great article here on what happens (and doesn't happen) when plist files are modified.

Where did my share menu items go?

Scotty after updating my computer, some options are missing from my share menu like twitter or mail. How can I get them back?

Open terminal.

Copy and paste the following command:

/System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchServices.framework/Versions/A/Support/lsregister -kill -seed

Hit return. It may take a few minutes but eventually the command should finish.

Restart your computer (optional) then go to system preferences/Extentions. Enable whatever you feel you need.
This image is a theme.plist hack