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Sometimes it can happen that the macOS update aborts with errors. There are several reasons for this, but there are also as many solutions. In this guide you will find instructions so that you can solve the various problems quickly and easily. That's how it currently works Update of the Apple Mac to macOS 11.1.
This point can be quickly reached via Mac menu (apple icon top left) -> About this Mac -> "Hard disks" tab check off. In order for a macOS update to be installed, there should be at least 15 GB of free space on the hard drive. This is because current Mac operating systems such as macOS 11 Big Sur alone require around 12 GB.
If there is not enough space on the Macintosh HD, there are several ways to solve this problem. For example, you can delete unnecessary or duplicate files / folders. You can also uninstall apps that are no longer used. If you don't want to delete anything, open large files and folders an external hard drive. In an emergency, the iPhone backup could be temporarily deleted in order to free up hard drive space for a short time.
If the macOS update aborts with an error message, this may be due to an incorrect time or date. If the system time on your Mac does not match the actual time, then this error can be fixed quickly. The instructions for this are not that long:
If there is a problem changing the necessary data, or if you generally prefer to use the terminal to adjust system settings, then the following steps work through. These ensure an adjustment via the command line of the system:
The Mac operating system is only updated to the latest version if you have the necessary rights with the account used. The update will therefore not be possible with a temporary guest account. It can also happen that you need the password for your user account in order to be able to carry out the macOS update without errors.
Since you are currently sitting at your Mac and want to run the update, this should rarely be a problem. If the password or the associated usage rights still cause an error, you can proceed as follows:
If this has solved your installation problem, please leave a comment.
If there is free space and usage rights, but the macOS update still aborts with an error message, there are other solutions. One of them is the renewed download of the update installer or the manual start of the same. If the update download is 100% complete, but the update does not start automatically, then proceed as follows:
If there is no installer in the folders, not even as an incomplete download, then you will probably have to download it again. To do this, deletes possible remnants of downloaded updates, including canceled downloads, in the folders shown. Then you do the following:
Do you use different hard drive partitions for different operating systems on the Apple Mac, for example APFS Volume für die parallel use of Catalina and Big Sur, then this can also result in an error. If the macOS update aborts with the error that a partition or a volume cannot be adjusted, then click into the hard disk utility and use the "First Aid" option:
After these steps, the installation of the macOS update should work. At least if the fault lay in the allocation of the hard disk space. Do you want to dissolve an APFS volume to avoid problems or because you no longer need the second operating system, then you can read here what needs to be considered beforehand.
The solutions shown should definitely work if the macOS update under Big Sur aborts with errors. They should also work with older OS versions up to 10.15 Catalina. However, you can also use another trick with the X versions up to Catalina: the so-called combo update.
Because where Big Sur only gets the updates from the App Store or from the software update area of the system settings, there is a third way for older macOS versions: the Apple support website. An example would be the macOS Catalina 10.15.7 Combo Update that you with this link finds. Good luck installing updates and fixing bugs!
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After graduating from high school, Johannes completed an apprenticeship as a business assistant specializing in foreign languages. But then he decided to research and write, which resulted in his independence. For several years he has been working for Sir Apfelot, among others. His articles include product introductions, news, manuals, video games, consoles, and more. He follows Apple keynotes live via stream.