Apple released the latest edition of macOS, version 10.13 High Sierra, so it's time to prepare your Mac for the update.High Sierra may be a relatively subtle update, performing a lot of changes to. Which Macs Don't Support High Sierra. For some reason Apple doesn't want to allow these Macs to run one of its latest operating systems, namely macOS 10.13 High Sierra. This leaves the following Macs on macOS 10.11 El Capitan: MacBook Pro – late-2009 or earlier models; MacBook – late-2008 or earlier models; MacBook Air – 2009 or earlier.

A few months ago, Apple officially released its latest operating system, the macOS High Sierra, to the public. And with all other Mac operating systems, High Sierra is designed to make a Mac computer more reliable, capable, and responsive by refining the features and apps used by most Mac owners on a daily basis.

While there’s no doubt Apple created masOS High Sierra with the highest regard for quality and reliability, it is not totally invulnerable to errors. As more users continue to download, install, and use the new OS, more instances of macOS failures are being reported. In this article, you will learn how to fix macOS High Sierra installation error including the dreaded download and installation freezes, one of the main High Sierra problems.

1. Failed macOS High Sierra Download

High Sierra problems can be encountered right at the beginning when you first try to download the installation pack from the App Store. A number of users report getting a pop-up dialog that would say something along the lines of:

Mac Os High Sierra Apple Download

  • An error has occurred.
  • Failed to download.
  • macOS High Sierra download has failed.
  • Installation of macOS could not continue.

Of course, this is a problem because you cannot upgrade to macOS High Sierra. This error can be caused by the poor Internet connection, so make sure you have a good one. You may want to switch to a wired connection from a wireless connection in the meantime. If you’re using Macbook Air, make sure you’re in a spot where there’s a strong and reliable Wi-Fi connection. It’s also possible that there are too many users downloading at the same time, so you may want to try again a bit later.

Before you try downloading again, you need to reboot the App Store and delete temporary files from the previous download. Here’s how:

  • Go to Apple menu, look for the Apple logo at the upper left corner of your screen.
  • Choose Force Quit.
  • Look for App Store on the list. Click on it.

To remove partially downloaded files, go to your Downloads folder and look for items named macOS 10.13 High Sierra and then delete them.

2. Lack of Sufficient Disk Space to Install macOS High Sierra

MacOS High Sierra requires at least 2 GB of RAM and about 9 GB of hard disk space, but to ensure smooth installation and operation, you need to leave around 15 to 20 GB of free storage.

If you get an error message during installation saying that you don’t have enough hard drive space to install macOS High Sierra, consider doing any or all of the following:

  • Delete old, unused, and unnecessary files and apps.
  • Delete app caches.
  • Delete old device backups.
  • Delete unnecessary media files from iTunes.
  • Delete temporary files.
  • Delete unused dictionaries or language packs.
  • Move files you still want to keep but do not use on a daily basis to an external drive.
  • Compress large files.
  • Empty the Trash.

This may sound a lot but if you want to save some time looking for junk and broken files to delete, consider installing automated tools like. Running a scan using 3rd party tools allows you to find temporary and unneeded files with just one click of a button. Deleting those files through the same app is also as equally easy.

3. High Sierra Won’t Install

So you were able to download the installation package all right but the sad thing is that it won’t install. If this is the case, there might be conflicts with the existing macOS Sierra on your Mac. Here are the steps to fix this problem:

  • Open Launchpad.
  • Look for a file named Install macOS Sierra with a question mark. Delete it.
  • Restart your Mac.
  • Download the macOS 10.13 High Sierra update again.
  • Go to Apple menu.
  • Select Apple Store.
  • Go to Update. Click on Update next to macOS Sierra.

4. MacOS High Sierra Freezes While Installing

At last, you successfully downloaded the installation pack and got it to open but nothing happens. You try to click Continue but the button is greyed out. If you experience this, you’re definitely not the first one. This problem is what generally users encounter and report as they attempt to finally enjoy the new operating system. It is a real bummer, but don’t worry because there are still workarounds to this issue.


First, you might want to disable or uninstall any antivirus you have on your Mac for a moment as it might be preventing the installation. Second, you can try installing the update while in safe mode. To boot your Mac into safe mode, press the Power button while holding down Shift. Then, try to install masOS High Sierra once again. Third, quit the current, not responding, installation and then try again. To do this:

  • Press on Control and then click the installation icon on the Dock.
  • Click on Quit.
  • Go to Applications and then look for the macOS High Sierra Installation file. Choose it to quit it.
  • Repeat the installation.

5. Mac Won’t Boot After macOS High Sierra Installation

At this point, you might be thinking that there seem to be endless problems associated with the upgrade but you’ve come so far to quit. For boot problems after installation, all you need to do is reset the NVRAM or PRAM to make way for the new OS. By resetting the NVRAM or PRAM, your Mac will essentially start anew. To do, here are the steps:

  • Press the Power button while holding down Option, Command, P, and R all at the same time.
  • Wait until you hear the second startup chime before releasing the keys all at the same time.

6. Apps Crash After macOS High Sierra Installation

With the macOS High Sierra update, Apple completely moved to the 64-bit architecture. Unfortunately, some apps are yet to adapt to the change. If you are still using 32-bit apps, you need to update them if they already have a 64-bit update. Otherwise, you might need to uninstall them altogether.

However, uninstalling apps is more complicated than deleting files. There are tons of program files located in different folders you need to get rid of. To make your life easy, you can use tap any 3rd party tool to ensure complete and clean uninstallation of problematic apps.

If you’re running into errors and your system is suspiciously slow, your computer needs some maintenance work. Download Outbyte PC Repair for Windows, Outbyte Antivirus for Windows, or Outbyte MacRepair for macOS to resolve common computer performance issues. Fix computer troubles by downloading the compatible tool for your device.
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While the yearly major macOS update system is free to install, it is still limited to Macs that Apple deems compatible, and every year a generation of Macs essentially becomes obsolete. This is despite the fact that Apple is eager to emphasize that macOS is a widely compatible operating system.

As it happens, there are still people with close to ten-year-old Apple desktop computers still in use on a daily basis, likely performing a range of lighter tasks.

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Which Macs Don't Support High Sierra

For some reason Apple doesn't want to allow these Macs to run one of its latest operating systems, namely macOS 10.13 High Sierra. This leaves the following Macs on macOS 10.11 El Capitan:

  • MacBook Pro – late-2009 or earlier models
  • MacBook – late-2008 or earlier models
  • MacBook Air – 2009 or earlier models
  • iMac – late-2008 or earlier models
  • Mac Mini – 2009 or earlier models
  • Mac Pro – 2009 or earlier models.

These machines are considered obsolete and vintage by Apple. The company defines vintage products as those that have not been manufactured for more than five years but less than seven years ago. Obsolete products are those discontinued more than seven years ago.

How To Install macOS High Sierra on Unsupported Macs

Though Apple doesn't support the above hardware officially, someone has thought about sharing the love for these older machines. A developer known as DOSDude1 has written a patch that works on Macs with the Penryn architecture. Using this still imposes certain limitations, but at least makes it possible to install macOS High Sierra on the following Macs:

  • Early-2008 or newer Mac Pro, iMac, or MacBook Pro (MacPro 3,1 and 4,1, iMac 8,1 and 9,1, MacBook Pro 4,1, 5,1, 5,2, 5,3, 5,4, and 5,5).
  • Late-2008 or newer MacBook Air or Aluminum Unibody MacBook (MacBook Air 2,1, MacBook 5,1).
  • Early-2009 or newer Mac Mini or white MacBook (Mac Mini 3,1, MacBook 5,2)
  • Early-2008 or newer Xserve (Xserve 2,1, Xserve 3,1).
Download macos 10.13 high sierra for macbook air 13.3Macos

If you happen to own any of the Penryn Macs mentioned above, the macOS High Sierra Patch Tool written by DOSDude1 will make running the latest software possible. But remember, with High Sierra you will also migrate to the Apple File System, and it is highly recommended that you first disable SIP because it may prevent the patch from working at all.

Installing the operating system on any of these Macs will require some technical knowledge, so it is not recommended for novice users. Also, a backup of your data is always a good idea in case anything goes wrong.

While there is a full step-by-step tutorial and video tutorial available on DOSDude1's website, it’s good to get a summary of the basics, which start with downloading the macOS High Sierra Installer app from the Mac App Store:

  1. Format a USB drive as Mac OS Extended (Journaled) via Disk Utility.
  2. Open the macOS High Sierra Patcher tool, navigate to the High Sierra Installer App, then select your pen drive and click “Start Operation”.
  3. Boot from the USB drive by holding down the option key after reboot.
  4. Install macOS normally, reboot back on the installer drive, and then open the “macOS Post Install” application.
  5. From the options, select the Mac model you own. This step is important, because it contains the optimal patch for that specific model.
  6. Click the “Patch” button, and after the process has finished, click “Reboot”.

The Reason Not To Install macOS High Sierra on an Unsupported Mac

As you may have already experienced with other types of officially unsupported machines, the probability of having issues is much higher. The same applies in this case, too, since the macOS High Sierra Patcher will render your iMac 8.1 Broadcom Wi-Fi chip useless for certain models.

Macs that use the Broadcom BCM4321 Wi-Fi module will not have functional Wi-Fi when running High Sierra. Another issue that has been highlighted by the developer is that the trackpad in the MacBook 5,2 isn't fully supportedAvast secureline vpn free download macbook. in this version of OS.

These are just a few of the possible issues that could arise, and this is before even mentioning the various potential software errors that you can run into by using out-of-date hardware. Without getting the proper knowledge beforehand, you'll need to revert back to the previous state of the Mac, which won't be an easy process, especially not without a Time Machine backup.

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