![]() When you see the macOS Utilities window, you have two choices.Restart your Mac while holding Command + R until you see the Apple logo.This is the last resort if nothing else works. It may be that the combo updater works, where the Mac App Store version doesn’t. The combo updater contains all the files necessary to install macOS on all Macs, whereas the version downloaded from the App Store only has the files for your specific Mac. If you can restart in Safe mode and quit the installer, try downloading the combo updater from Apple’s website. It may take a little longer than normal to restart twice, but the NVRAM will have reset once it's done. Restart your Mac while holding the Command + Option (Alt) + P + R keys and wait until you hear a startup chime. It’s quite tricky to do, so that you might need some help. Resetting NVRAM rarely has any effect, but it can do in some situations, and as it won’t do any harm, it’s worth trying. ![]() NVRAM persists, thanks to a small amount of power supplied by your Mac’s internal battery. The NVRAM on your Mac stores data even after your Mac shuts down or restarts, unlike regular RAM, which is flushed every time you restart. If it works, you should restart your Mac normally after the installation and remove any launch agents and daemons you don’t need. ![]() If the problem were that launch agents or daemons were interfering with the upgrade, Safe mode would fix that. Try running the installer again while in Safe mode Restart your Mac from the Apple menu or by holding down the power button, and press Shift until you see the Apple logo. Safe mode disables startup items, launch agents, and everything else except the bare minimum macOS needs to function. How to fix “macOS could not be installed on your computer” 1.Restart your Mac in Safe mode You might need to reboot in Safe mode, see below, to check because if you do a normal restart, your Mac may immediately relaunch the installer. You should see a message that says, “works on this Mac.” Alternatively, go to Apple’s website support pages and search for the minimum system requirements. The best way to do that is to launch the App Store app, search for the macOS version you’re trying to install, and scroll down the Compatibility section. A piece of software like a launch agent or launch daemon is interfering with the upgradeĬheck if your Mac is compatible with the version of macOS you’re trying to install.There’s a problem with the disk on your Mac.You don’t have enough space to install a new version of macOS.There was a problem downloading the installer.Your Mac doesn’t support the version of macOS you’re trying to install.There are several reasons you might see this error message. Why does “macOS could not be installed on your computer” appear? But if you don’t want to use Time Machine, create a bootable clone of your startup disk using a tool like SuperDuper or Carbon Copy Cloner. It’s best to do the backup using Time Machine, as you can then use Recovery Mode to restore your Mac from the backup. One of the steps described below involves a complete reinstall of the operating system, resulting in erasing data from your drive. It’s essential that before you perform any major upgrade that you backup your Mac. Before you try to install a new version of macOS ![]() But it can quickly become frustrating if, instead of being presented with a brand new Mac, ready to use, you see an error message like “macOS could not be installed on your computer.” Fortunately, you can do lots of things to fix the problem, so let’s get started. But to help you do it all by yourself, we’ve gathered our best ideas and solutions below.Ī new version of macOS is always exciting. So here’s a tip for you: Download CleanMyMac to quickly solve some of the issues mentioned in this article.
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