Type or paste the following command as one line in Terminal, then press Return.Choose Utilities > Terminal to open the Terminal app.Select the command in step 9, copy it, then quit Safari before you continue to the next step.Choose Get Help Online from the OS X Utilities list, then go to /kb/HT205956.To make it easier to enter the command shown in step 9, you might want to copy it from Safari:.Choose File > Mount in Disk Utility to mount your drive, if it's not already mounted.Choose File > Unlock from the Disk Utility menu, then enter your FileVault password.

If the drive name is dimmed, it might be protected by FileVault.The default name is “Macintosh HD.” Your drive might have a different name or location, if you renamed or moved it. Select your drive from the list of internal drives in the sidebar.Select Disk Utility from the list of OS X Utilities.Restart from OS X Recovery by holding down Command-R while your Mac starts up.If 3.28.1 is installed, and no WiFi is available, will have to use a WiFi adapter to connect to the Internet, in order to download kernel version 3.28.2, which addresses the Ethernet issue across all Macs.Īpple offers a number of steps to take in order to regain connectivity, as outlined in their support page: The kernel version responsible for the issue is 3.28.1, and in case the Ethernet connection is not working, Apple recommends to check System Information and see what kernel version is installed. The issue doesn’t affect WiFi, Bluetooth or other types of wireless connectivity, and Apple was quick to respond with a fix for the incompatible kernel version configuration data. Late last month, owners of MacBook Pro laptops, and especially Mac Mini, and iMac Retina users, may have noticed being unable to connect to the Internet using a wired Ethernet connection. Ethernet not working on your mac? Here is a fix.

2009 mac ethernet