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theshadow82 Author

Level 1

2 points

My iMac's computer name keeps changing automatically after Yosemite upgrade

This started happening once I upgraded my iMac to Yosemite. It will add numbers to the name of my iMac.

Example: It starts off as say "My iMac"

Then a half day later, it changes to "My iMac (2)"

Then the next day it will be "My iMac (3)"

And if I open the Finder window, it will show "My iMac" and "My iMac (2)" under "Shared" but if you click on them, nothing happens.

When I go to System Preferences > Sharing the computer name will have the number there "My iMac (3)" and say it can be found as MyiMac-3.local

If I change it back to just "My iMac", the number process starts all over again. I even tried naming the iMac something it was never named before and the same process occurs with the adding of the numbers.

Anyone know how I can fix this?

iMac (21.5-inch, Late 2012), OS X Yosemite (10.10)

Posted on Oct 26, 2014 3:45 PM

Top-ranking reply

dianeoforegon

Level 5

7,293 points

Posted on Mar 20, 2017 4:06 PM

Boot into the Recovery Drive. Run Disk First Aid on your internal drive.

Boot into the Recovery Drive by holding down Command R when restarting.

Open Disk Utility

Run First Aid on your internal drive, Macintosh HD

Quit Disk Utility

MORE INFO:

https://support.apple.com/en-us/HT201314

========================================

Remove any accents, apostrophes or special characters in Computer Name.

Check to see if the Computer Name(as seen in the Sharing Preference Pane), Local Host Name and Host Name are the same. The Local Host Name and the Host Name, which is often it's fully qualified name if

on a company network (such as computer.example.com). Often these are identical but they can be different. More Info

Open the Terminal application in Applications/Utilities. Run these three

commands:

sudo scutil --get ComputerName

sudo scutil --get LocalHostName

sudo scutil --get HostName

If the names are different you can try changing using these commands. Copy/paste usually works, but you might need to type out the commands.

sudo scutil --set ComputerName "newname"

sudo scutil --set LocalHostName "newname"

sudo scutil --set HostName "newname"

Reference:

http://osxdaily.com/2012/10/24/set-the-hostname-computer-name-and-bonjour-name-s eparately-in-os-x/