Can’t Install macOS Sonoma 14 on Your Mac? Fixed with 10 Tips

Cassie
Last updated: Sep 27, 2023
Summary: If you can’t install macOS Sonoma 14 on your Mac computer, check the 10 tips in this post to fix the problem.

When you try to install macOS Sonoma on your Mac, it says “macOS Sonoma cannot be installed on Macintosh HD” or “macOS Sonoma cannot be installed on this computer”. You can check the possible solutions below to fix the “can’t install macOS Sonoma” issue.

can’t install macOS Sonoma

Causes to “Can’t Install macOS Sonoma”

Fix Can’t Install macOS Sonoma 14 – 10 Tips

To fix macOS Sonoma won’t install on your Mac, you may try the 10 solutions below to see if they can help you solve the problem.

Fix 1. Restart Mac and Try to Install macOS Sonoma Again

You can click Apple > Restart to reboot your Mac. Then launch the macOS Sonoma installer app again to try to install the macOS.

Fix 2. Make Sure to Have a Good Internet Connection

Poor internet connection may cause the macOS Sonoma installation failed error. Ensure to have a fast network connection when installing the new Mac OS.

Fix 3. Check for macOS Sonoma Compatibility

Before you decide to upgrade to macOS Sonoma, you should check if your Mac is compatible with the new Mac OS first. Check the macOS Sonoma compatibility, requirements, and supported devices.

Fix 4. Free Up Space for macOS Sonoma Install

If you can’t install macOS Sonoma on Macintosh HD, your Mac may not have enough free space for the new OS. macOS Sonoma is about 13GB and it requires more space to install.

Click Apple > System Settings > General > Storage to check your Mac storage. If your Mac’s disk is nearly full, you can use BuhoCleaner to free up space on your Mac.

BuhoCleaner is a professional Mac cleaner program. It allows you to scan and remove junk data, uninstall apps, delete large/duplicate files, etc. on your Mac. Get BuhoCleaner to free up space on your Mac and speed up your Mac.

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free up space for macOS Sonoma 14

Fix 5. Upgrade to macOS Sonoma from Software Update

If you can’t install macOS Sonoma with the downloaded installer file, you may try to install it from the Software Update screen.

Click Apple > System Settings > General > Software Update. If it shows macOS Sonoma is available for your Mac, you can click Upgrade Now to download and install macOS Sonoma.

upgrade to macOS Sonoma

Fix 6. Delete the Corrupted macOS Installer File and Try Again

The macOS Sonoma installer file may be corrupted. You can open the Applications folder, find the installer app to delete it, and empty Trash. After that, you can download the macOS Sonoma installer file again and try to install macOS 14 on your Mac again.

Fix 7. Repair Your Mac Startup Disk

If your startup disk has issues, it may cause the macOS Sonoma installation failed error. You can run First Aid in Disk Utility to repair startup disk errors. Just open Disk Utility via Spotlight, select Macintosh HD, and click First Aid > Run.

Rrepair Mac startup disk

Fix 8. Convert HFS+ to APFS for Macintosh HD

macOS Sonoma requires APFS file system format. If your Mac is very old and still uses the Mac OS Extended (Journaled) HFS+ format, you may convert HFS+ to APFS to fix can’t install macOS Sonoma.

  • Launch Disk Utility via Spotlight.
  • Select Macintosh HD from the left panel. You can view the file system format of your Macintosh HD in the right window.
  • If your Mac uses HFS+, click Edit in the menu bar and select Convert to APFS.
note
You must back up your Mac before you convert the file system since it may cause data loss. If the “Convert to APFS” option is grey in normal mode, you may restart Mac in Recovery Mode and follow the steps above to convert HFS+ Macintosh HD to APFS.

Fix 9. Perform a Clean Install of macOS Sonoma

If you can’t upgrade to macOS Sonoma from the Software Update screen or use the downloaded installer, you may create a bootable USB installer to perform a clean install of macOS Sonoma. To install macOS Sonoma on unsupported Macs, you can also perform a clean install.

Fix 10. Start Mac in Safe Mode to Install macOS Sonoma

At last, you may start your Mac in Safe Mode and try to install macOS Sonoma in Safe Mode.

Verdict

If you can’t install macOS Sonoma 14 on your Mac, you may try the 10 fixes in this post to see if they can help you fix the issue.

Cassie

Cassie has been writing about technology for her entire career life - over 10 years. She enjoys diving into how Apple products work and then breaking it down in a way that anyone can understand.