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Can’t Download macOS High Sierra – Fix Installation Issues

Having trouble downloading macOS High Sierra? Find out how to fix installation issues in this article.

Preparing Your Mac for Upgrade

Before upgrading your Mac to macOS High Sierra, it’s essential to make sure your device is prepared for a smooth installation process. Here are some steps to follow:

1. **Backup your data:** Before starting the upgrade process, it’s crucial to back up all your important files and data. This will ensure that you don’t lose any information in case something goes wrong during the installation.

2. **Check compatibility:** Make sure your Mac is compatible with macOS High Sierra. You can check the compatibility requirements on Apple’s website to ensure your device meets the necessary specifications.

3. **Free up storage space:** macOS High Sierra requires a certain amount of free storage space to install. Make sure you have enough space on your Mac before attempting to download and install the update.

4. **Update your current macOS:** Before upgrading to macOS High Sierra, make sure your current operating system is up to date. Check for any pending updates in the App Store and install them before proceeding with the upgrade.

5. **Connect to a stable internet connection:** A stable internet connection is essential for downloading macOS High Sierra. Make sure you are connected to a reliable Wi-Fi network before starting the download.

6. **Navigate to the App Store:** Open the App Store on your Mac and search for macOS High Sierra. Click on the download button to begin the installation process.

Troubleshooting Installation Issues

If you are experiencing installation issues when trying to download macOS High Sierra, there are a few troubleshooting steps you can take to fix the problem.

First, make sure you have a stable internet connection and enough disk space on your Mac to download the operating system. If the download keeps failing, try clearing the cache and cookies on Safari or using a different web browser.

If you are still having trouble, try downloading macOS High Sierra from the App Store on your Mac. Make sure your Apple ID is signed in and try restarting the App Store if the download is stuck.

If the issue persists, you can try creating a bootable USB installer for macOS High Sierra. This can be done using another Mac or a virtual machine if you do not have access to one.

Another option is to try downloading macOS High Sierra from a different network, such as a public Wi-Fi or a hotspot from your mobile device.

If none of these solutions work, you may need to contact Apple Support for further assistance with troubleshooting the installation issues on your Mac.

Remember to always back up your data before attempting any troubleshooting steps to avoid losing important files on your iMac, MacBook, or MacBook Air.

Optimizing Internet and System Settings

Optimizing Internet and System Settings
Internet Settings
1. Check your internet connection and ensure it is stable.
2. Disable any background processes that may be using up bandwidth.
3. Clear your browser’s cache and cookies to improve download speed.
4. Consider using a wired connection instead of Wi-Fi for faster speeds.
System Settings
1. Close any unnecessary applications and processes running in the background.
2. Check for updates to your operating system and install any available updates.
3. Restart your computer to clear out any temporary files and refresh system settings.
4. Consider increasing your system’s RAM or storage space to improve overall performance.

Addressing Post-Upgrade Performance Problems

  • Check system requirements to ensure your device is compatible with macOS High Sierra.
  • Free up storage space on your device before attempting the installation.
  • Perform a clean installation of macOS High Sierra instead of an upgrade.
  • Disable unnecessary startup items that may be affecting performance.
  • Reset PRAM and SMC on your Mac to address any issues caused by the upgrade.
  • Run disk utility to check for any errors on your device.
  • Contact Apple Support for further assistance if the issues persist.

Recovering Lost Data and Resetting System Parameters

To recover lost data and reset system parameters when experiencing installation issues with macOS High Sierra, follow these steps:

First, to recover lost data, you can use a data recovery software such as Disk Drill or EaseUS Data Recovery Wizard. Connect an external storage device to your Mac and run the software to scan for any lost files.

If you have backups of your data, restore them using Time Machine or iCloud. Time Machine allows you to easily restore your files from a backup, while iCloud lets you access your data from any Apple device.

If resetting system parameters is necessary, you can reset the NVRAM (non-volatile random-access memory) or PRAM (parameter RAM) on your Mac. To do this, restart your Mac and hold down Command + Option + P + R until you hear the startup sound twice.

If you need to reset the SMC (System Management Controller), shut down your Mac and hold down Shift + Control + Option + Power button for 10 seconds. Then release all keys and turn on your Mac. This can help resolve various hardware-related issues.

If you are still unable to download macOS High Sierra, consider creating a bootable USB installer using a tool like DiskMaker X. This allows you to install the operating system from a USB drive if the App Store installation is not working properly.

You can also try downloading macOS High Sierra from a different network or using a different web browser like Safari to see if the issue is network-related. Sometimes, changing these variables can help resolve installation problems.

If all else fails, reach out to Apple Support for further assistance or consider visiting an Apple Store for in-person help. They may be able to diagnose the issue and provide a solution tailored to your specific Mac model and setup.


Can you still download macOS High Sierra?

Yes, you can still download macOS High Sierra by going to the App Store on your Mac and clicking Updates.

Why wont my Mac let me install macOS?

My Mac won’t let me install macOS because it may not support the version I’m trying to install, there could have been an issue downloading the installer, or there may not be enough space available for the installation.

How do I manually install macOS High Sierra?

To manually install macOS High Sierra, you can start by holding down the [option] or [alt] (⌥) key on the keyboard while powering on the device. Release the key when you see the boot selection screen, then use the arrow keys or mouse to select “Install MacOS High Sierra” before pressing [enter] or clicking to confirm.

How can I reinstall macOS High Sierra?

To reinstall macOS High Sierra, you can shut down your computer, then press and hold the power button to access the startup options. From there, select the “Reinstall macOS” option and follow the onscreen instructions in the Recovery app window.

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