Chapter in this post:
If you have placed a macOS installer in the trash of the Mac operating system and it cannot be deleted, you will find the right solution here. In addition to a few simple solutions, the last way - which should definitely work - is via booting in recovery mode. But don't worry, you won't lose any data. If, for example, the Catalina installer cannot be deleted from the trash under macOS Big Sur, then try the following tips and tricks;)
If the problem is just a temporary bug, the following tips can help. If you get stuck with this, try the instructions under the next subheading. But here are the less extensive tricks:
System integrity protection is not a new feature of macOS 11 Big Sur, but has been active on the Apple Mac since OS X 10.11 El Capitan. The security technology prevents system files and other protected content from being changed unlawfully. Originally developed as protection against malware, in some cases the SIP (System Integrity Protection) can prevent users from changing data, files and folders. Can't delete the Catalina installer from the trash on macOS Big Sur? That can be because of the SIP!
If you want to deactivate the Mac System Integrity Protection in order to delete an installer under macOS, the best thing to do is to activate it again after the cleanup. Otherwise you will make your Apple computer more vulnerable. After this hint you can start - this is how it works:
System Integrity Protection (Support document) the error shown may also appear in other versions of Apple's Mac operating system. Since it has been part of the system since OS X El Capitan (2015), other installers in other macOS versions may not be able to be removed without the above steps. This can apply equally to Sierra (2016), High Sierra (2017), Mojave (2018), Catalina (2019) and Big Sur (2020). Do you have any questions, hints, tips or tricks on the subject? Leave your experiences as a comment;)
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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.