Updating your MacBook or iMac should be free of headaches and drama. Apple even coined a marketing phrase “it just works!” But recently, a lot of readers and Mac users are finding the opposite–it just doesn’t work! Several users have recently had issues updating their MacBook with the latest version of macOS. Unfortunately, this appears to be a fairly common problem for some when updating to the latest macOS High Sierra update.
Jan 30, 2018 In this video we show you how to fix the issue that comes up when installing an update of macOS. To do this we go into Safe Mode and perform all of the changes from there. Twitter: http. Sep 27, 2018 macOS could not be installed on your computer. This sometimes failed but the software would continue to run. Except there would be a security hole. A security researcher found that a huge number of Macs run old firmware and since then, Apple is doing checks for this. Try loading the OS from another profile on your Mac. Jun 22, 2018 If you are experiencing this issue with your update, here are a few tips that you can use to address this issue. Before proceeding with the steps below, we suggest that you ensure your Mac’s clock is correct. If your Mac’s Date&Time do not match your current timezone or date, macOS often won’t install. Go to System Preferences Date & Time.
The update gets stuck with a message “mac os could not be installed on your computer an error occurred installing macOS.” Some folks report seeing this message as well “the path /System/Installation/Packages/OSInstall.mpkg appears to be missing or damaged.”
Then your Mac prompts you to quit the installer and restart your computer. Well, Apple, whatever happened to it just works???
Contents
Quick Tips
RELATED ARTICLESGetting macOS could not be installed on your computer?
If you are experiencing this issue with your update, here are a few tips that you can use to address this issue. Before proceeding with the steps below, we suggest that you ensure your Mac’s clock is correct. If your Mac’s Date&Time do not match your current timezone or date, macOS often won’t install. Go to System Preferences > Date & Time. Apple prefers if you choose the option to Set Automatically.
Next, let’s try out the basic NVRAM reset (or PRAM for older Macs) on your computer.
Follow these steps if you are not sure about how to do the NVRAM reset
Check Storage
The other thing is to make sure that your MacBook/Mac has enough space available to complete the update. If you are running low on space, Apple provides some guidelines that can help you recover some space on your Mac.
Beyond the Basics
Now, that we have taken care of the basics, we suggest that you try each of the processes below until your macOS install problem is fixed. We arranged the how-to-fix steps in three separate categories.
The first of the troubleshooting steps walk you through Safe mode options and then we suggest the Recovery mode. The last of the options shows you how to remove third-party KEXT files using simple terminal commands and then try the install process.
How-To Fix macOS could not be installed issueFixing the Install issue using Safe Mode on your Macbook
If you tried the steps above in Safe mode and did not find success, the next course of action is to try the Recovery mode.
Mac Software For This Not Installed 9945 FileFixing macOS Install Problem in Recovery Mode
Sometimes, when you are facing install/upgrade issues, a workaround that works for many users is to create an external bootable installer and try to run the install program using it. Apple provides a detailed white paper on this process. You can create the bootable installer on a USB and then try it to update the macOS.
Removing Third Party KEXT Files
If you are still reading and have already tried the series of fixes in both Safe mode and Recovery mode to no avail, you may have to roll up your sleeves and do a little more digging into the root cause of the issue. Sometimes it’s the third party KEXT extensions that cause a lot of heartache during update/install of macOS.
These KEXT Files get added to your Mac/MacBook when you are using third-party devices. If you are not sure about it, your best bet is to look and see what third-party extensions are currently there on your machine.
To do so, Open up terminal from your utilities and type in the following to see the non-Apple KEXTs.
Kextstat | grep –v com.apple
This command should show you all the third party extensions. Now you can remove them one by one or remove the one that you think may be the suspect. Using terminal, you can unload the kext my using the following command.
sudo kextunload /System/Library/Extensions/NAMEOFTHEKEXT.kext
Here ‘NAMEOFTHEKEXT’ needs to be replaced with the appropriate suspect KEXT file that you found above. Once you have unloaded the KEXT, you can go back and check to make sure that it has indeed been removed by using the kextstat command.
Once you have removed all the third party KEXT files and have made sure that you have enough space on your machine for the macOS update, please try and relaunch the install process.
Problems? Try Single User Mode
If your install process is failing because of a particular problematic file, you can also try to log in using the single user mode and delete that specific file and then try resuming the install. Sometimes you find these problematic ones off files in the Installer log files. To access these log files, open up the Console app in utilities and click on ‘/var/log’ on the left-hand column and then choose ‘instal.log’in the next column.
We are hoping that you were able to fix the macOS Install issue using some of these tips. If you have tried everything without any success, your best bet is to reach out to Apple Support folks so that they can help out. Please let us know how your install worked by using the comments below.
Reader Tips
Obsessed with tech since the early arrival of A/UX on Apple, Sudz (SK) is responsible for the editorial direction of AppleToolBox. He is based out of Los Angeles, CA.
Sudz specializes in covering all things macOS, having reviewed dozens of OS X and macOS developments over the years.
In a former life, Sudz worked helping Fortune 100 companies with their technology and business transformation aspirations.
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Check compatibility
If you're using one of these computers with OS X Mavericks or later,* you can install macOS Catalina. Your Mac also needs at least 4GB of memory and 12.5GB of available storage space, or up to 18.5GB of storage space when upgrading from OS X Yosemite or earlier.
MacBook introduced in 2015 or later
MacBook Air introduced in 2012 or later MacBook Pro introduced in 2012 or later Mac mini introduced in 2012 or later iMac introduced in 2012 or later iMac Pro (all models) Mac Pro introduced in 2013 or later
* To upgrade from Lion or Mountain Lion, first upgrade to El Capitan, then upgrade to Catalina. To find your macOS version, Mac model, memory, and storage space, choose About This Mac from the Apple menu . If your Mac isn't compatible with macOS Catalina, the installer will let you know. View the complete list of compatible computers.
Make a backup
Before installing any upgrade, it’s a good idea to back up your Mac. Time Machine makes it simple, and other backup methods are also available. Learn how to back up your Mac.
Get connected
It takes time to download and install macOS, so make sure that you have a reliable Internet connection. If you're using a Mac notebook computer, plug it into AC power.
Download macOS Catalina
If you're using macOS Mojave, get macOS Catalina via Software Update: Choose Apple menu > System Preferences, then click Software Update.
Or use this link to open the macOS Catalina page on the App Store: Get macOS Catalina. Then click the Get button or iCloud download icon.
Begin installation
After downloading, the installer opens automatically.
Click Continue and follow the onscreen instructions. You might find it easiest to begin installation in the evening so that it can complete overnight, if needed.
If the installer asks for permission to install a helper tool, enter the administrator name and password that you use to log in to your Mac, then click Add Helper.
Allow installation to complete
Please allow installation to complete without putting your Mac to sleep or closing its lid. Your Mac might restart, show a progress bar, or show a blank screen several times as it installs both macOS and related updates to your Mac firmware.
Stay up to date
After installing macOS Catalina, you will be notified when updates to macOS Catalina are available. You can also use Software Update to check for updates: Choose Apple menu > System Preferences, then click Software Update.
Or get macOS Catalina automatically
If you're using OS X El Capitan v10.11.5 or later and your App Store preferences or Software Update preferences are set to download new updates when available, macOS Catalina will download conveniently in the background, making it even easier to upgrade. A notification will inform you when macOS Catalina is ready to be installed. Click Install to get started, or dismiss the notification to install later. When you're ready to install, just open the file named Install macOS Catalina from your Applications folder.
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