Mar 12, 2020 Installers for each of these macOS versions download directly to your Applications folder as an app named Install macOS Catalina, Install macOS Mojave, or Install macOS High Sierra. If the installer opens after downloading, quit it without continuing installation. Important: To get the correct installer, download from a Mac that is using macOS. To install macOS High Sierra, you need a Macintosh that is adaptable (such as the MacBook or iMac at least at the end of 2009 and the MacBook Pro or Mac Pro at least mid-2010). To see if the Macintosh is compatible, press the Apple logo located in the menu bar.
FonePaw - Solution - Upgrade - macOS Installation Stuck
macOS installation problem happens all the time. After downloading the macOS installer, you try to install the macOS Catalina/Mojave, macOS Sierra or High Sierra but the installation get stuck. The progress bar has been stuck at 40% or something, showing: 'Installation is in progress. Calculating time remaining...'
If your macOS update also get stuck at 'Installation is in progress. Calculating time remaining...' Here shows you how to confirm if the installation is still going on and how to complete the update successfully.
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1.Check If the Install is Still Going on
Sometimes, it just takes a very long time for you MacBook or iMac to install the macOS Sierra or High Sierra update. So it doesn't necessarily mean that the macOS installation is frozen when the Mac stay at “20 minutes remaining” for two hours. And forcing restarting a Mac during OS installation may cause data loss. Therefore, before taking further action, press Command + L , which will open the log file and shows you if the installation is still going on and the amount of time left.
If you confirm that the installation is frozen, try the following methods to fix.
2. Force Restart Your Mac
Hold down the power button to power off the Mac. Then restart the Mac. After the Mac reboots, try to install the macOS Catalina, Mojave, High Sierra again.
If the installation get stuck when you try to update the Mac from Mac App Store, you may download macOS software from Apple website, which is the Combo updater which includes all the files required to update the macOS.
3. Install macOS in Safe Mode
Another way to install Catalina, Mojave, Sierra or High Sierra successfully is to install the macOS in safe mode. To get your Mac into Safe mode:
As you Mac start up, hold down the Shift key until the Apple logo appears.When you Mac is in Safe mode, go to App Store and get the High Sierra update.
4. Reset the NVRAM
If the Sierra or High Sierra installation is still won't complete in Safe mode, you can try to reset the NVRAM. NVRAM is a memory section on your Mac that store data like volume settings, screen resolution.
To reset the NVRAM on Mac, restart Mac and hold down Command + Option + P + R.The Mac will restart with options in NVRAM resetting. Now try to update your Mac.
5. Reinstall macOS in Recovery Mode
This will help you to install macOS Sierra or High Sierra and newer versions, without data loss.
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Restart your mac and hold down the Command + R to boot your Mac into Recovery mode.
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Click Disk Utility and choose First Aid for your startup drive.
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Restart the Mac again when this time, press Command + Option + R to get your Mac in Internet Recovery mode.
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Choose Install a new copy of MAC OS and wait for the installation to complete.
If you have a Time Machine backup, restore your Mac from the backup in Recovery mode. After the restoration, try to install the macOS again.
![Macos Macos](/uploads/1/2/6/5/126574820/313590796.jpg)
6. Clean Install from External Drive
If none of the above methods work for your Mac, you can try to clean install the macOS Sierra or High Sierra from external drive. Here is the complete guide of how to clean install macOS High Sierra on Mac.
7. Recover Mac Files When Catalina/Mojave/High Sierra Installation Is Stuck
After fixing the frozen macOS installation issue, you may found some files missing on your Mac. If so, you can use FonePaw Data Recovery to recover the deleted data from Mac. The program can restore the missing documents, photos and more from hard drive, SD card, USB drive on Mac and Windows PC. Download the Mac version of FonePaw Data Recovery to have a try.
DownloadDownload
Step 1. Run the program.
Step 2. Select one or all categories: photos, videos, audio, documents, email or others. Then select the hard drive of your Mac. Click Scan.
Step 3. Once the scanning is stopped, you can view the deleted files and choose the needed one to recover to your Mac.
If the macOS installation on your Mac is still stuck or frozen, describe the problem below.
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Professional Data Recovery wizard works for deleted files recovery on your Windows computer.
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Your Mac doesn’t work well after you’ve installed macOS High Sierra? Or something went wrong during the installation? One of the easiest ways to fix such issues is reinstalling the operating system. Don’t worry, it won’t affect your files, data, apps, user settings, etc. Only a fresh copy of macOS High Sierra will be installed on your Mac again.
Please note that if you need to remove the data and reset your Mac to factory settings, go for clean install macOS High Sierra. A clean install will delete everything associated with your profile, all your files and documents, while the reinstall will not.
Once you’ve decided that you want to keep all your data intact, take advantage of our comprehensive guide on how to reinstall macOS High Sierra. But before you start, you have to prepare your Mac for the process.
Before You Begin: Back Up Your Data
Although the process of reinstalling is safe, it is still recommended to back up your data. Should something go wrong, you’ll be able to easily restore all necessary files.
There are a few incredibly easy ways to back up the files, documents, applications, etc. So, you can choose the most convenient one for you. One of the possible Mac backup solutions built into macOS is Time Machine. It allows frequent automatic backups. Surely, you can use iCloud, Dropbox or any other external storage to back up essential data.
Before reinstalling the macOS High Sierra, you might also need to clean the system junk. And not the system junk alone, but also gigabytes of other unwanted files like app leftovers, browser extensions etc. You don’t want to reinstall the operating system with all the clutter it contains, do you? You can clean up your Mac manually, but using an app like CleanMyMac X will save you tons of time. It will scan the system and safely remove all junk in a matter of minutes.
Once you’ve backed up your files and cleaned your Mac, you’re ready to reinstall macOS High Sierra.
A Step-By-Step Guide to Reinstall macOS High Sierra
Here’s how you can reinstall the macOS High Sierra and keep all files and user settings.
- Back up your Mac before you begin (just make sure you didn’t forget to do it).
- Click the Apple icon in the top left corner of your screen and choose Restart from the menu.
- Use the combination of Command and R keys; you’ll see the macOS Utilities window.
- Pick Reinstall MacOS.
- Click Continue.
- Select your hard drive (this is usually Macintosh HD).
- Click Install and complete the process.
That’s it! As you see, reinstallation is not a difficult process and it has an obvious advantage — it keeps all your data and configurations untouched. Now you can enjoy the new exciting features of macOS High Sierra, like faster Safari and better graphics.
Download Macos High Sierra
However, if you don’t like the new version of macOS, don’t let it give you a bad time. You can always downgrade to Sierra. But before turning to such radical measures, try to reinstall the macOS High Sierra. Probably it will resolve all the issues.
We hope you found this article helpful. Have a nice day and stay tuned!