Tip for macOS Mojave users with "No Wi-Fi Hardware Installed" problem
(The original tip post has been removed at Apple's forum. Added link to similar post.)
Saw several users with this problem say renaming /etc/sysctl.conf file (if it exists) solved it. Usually with the "No Wi-Fi hardware installed" problem, there's no Ethernet also. (Not running 10.14 personally but posts in several threads replied this helped, as well as with other issues.)
In case the post gets deleted (again) here's a copy of the user tip (backup your drive first):
"Fixed it! It is amazing to me that one tiny config file can bring down the whole system! I followed the instructions of someone else in the replies (forgot the name) and Mohave installed without a hitch. Here are the instructions:
If you're also seeing symptoms like networking failing, bluetooth devices not connecting, etc, and you have been using the mac for a while (or restored it from another machine using migration or time machine), then it's due to an old, out of date system configuration file: /etc/sysctl.conf This file doesn't even exist on new macs, so if you have it, it will cause problems. (At least with the upgrade to macOS 10.14.)
A. If you can log in (even if slow), or you're still on High Sierra, and have not yet upgraded, follow these instructions:
1. Start the terminal app from Applications/Utilities
2. Check if the file exists, by typing
ls -l /etc/sysctl.conf
If this returns a result like the following, then the file exists. (If it does not, then your issues are caused by something else.)
(You could also just go to the Mojave boot drive's etc folder, and rename the sysctl.conf file (i.e. to sysctl.bak). You'll need the admin password to rename it.)
-rw-r--r-- 1 root wheel 136 24 Nov 2013 /etc/sysctl.conf
3. Remove the file: (actually this command will simply rename it, so you can restore it if you really want to...)
You'll be prompted for your password.
sudo mv /etc/sysctl.conf /etc/sysctl.conf.bak
4. Restart your computer, and you should be all set, or if you've rolled back to High Sierra, you should be good to attempt the Mojave upgrade again.
B. IF you are unable to successfully log in at all (usually those who are running encrypted disks), then you're going to have to do a couple of steps first.
Reboot in to 'recovery mode' by holding Command-R when you power on the computer until you see the apple logo.
You'll be presented by a menu with the 4 recovery options. One of them is 'disk utility'. Click on it to load disk utility.
Disk utility displays a list of the drives/partitions on your computer. One of these will be called something like 'Macintosh HD'. Select it. Next, On the top right hand corner of the disk utility window is a series of icons, one of which is called 'Mount'. Click on this. If you disk is encrypted, it may ask you to type in your password to unlock it. Do so.
Quit the disk utility app. This should take you back to the recovery menu.
Launch the Terminal app as follows: In the top main menu bar is a menu called 'Utilities'. Open this menu, and you should see 'terminal'. Click on it to launch.
From terminal, rename the troublesome file: mv /etc/sysctl.conf /etc/sysctl.conf.bak
Exit terminal, and restart your mac. You should be able to log in successfully."
That fixed it for many, but if the /etc/sysctl.conf file isn't present, check if you have any 3rd party security or network related app/startup item or extension installed - if so, remove it and reboot. (If networking works in Recovery mode, that points to a software addon issue.)
iOS 12.0.1 release notes
Includes bug fixes and improvements for your iPhone or iPad. This update:
- Fix issue where iPhone XS didn't immediately charge when connected to Lightning cable
- Fix issue that could cause iPhone XS to rejoin a Wi-Fi network at 2.4GHz instead of 5GHz
- Restores the original position of the ".?123" key on the iPad keyboard
- Fixes an issue where subtitles may not appear in some video apps
- Addresses an issue where Bluetooth could become unavailable
- Includes security fixes for VoiceOver and Quick Look
Mojave forum threads on "com.apple.fonts" alert popup (apparent keylogger)
Mojave forum threads on Mac App store problems (includes tips)
Posts on Time Machine Backups Failing after macOS 10.14 update
Late 2012 iMac 27in w/3TB Drive can't install Mojave if Boot Camp present
Some 10.14 users say Blank DVDs and Blank CDs Not Showing on Desktop
Tip for EyeTV app crashing in macOS Mojave
Article says Apple's Proprietary Software locks out non-Apple Repairs on New MBPros
Apple, Amazon dispute comments in Bloomberg article on hardware compromised servers
Aspyr support blog on game problems after upgrading to iOS 12
Security Updates for Adobe Acrobat and Reader (again)
Thread on Safari 12 and Plugins (for Netflix, Amazon, Hulu playback)
Guide to the New Mojave Security and Privacy Protections
Apple Support/Troubleshooting/How-To Article Updates:
- If your Mac is lost or stolen
- How to reinstall macOS from macOS Recovery
- If you can't connect to the App Store, iTunes Store, or Apple Books
- How to create a NetBoot, NetInstall, or NetRestore image (now Archived)
- How to Back up and restore your iTunes Library
- How to use Business Chat
- Read books and more with Apple Books
- Learn which size SIM card your iPhone or iPad uses
- How to remove or switch the SIM card in your iPhone or iPad
- Tip for Cellular Update failure that's not in the Apple article below.
- If you see Cellular Update Failed or Apple Pay Not Available after iOS update or restart.