How to prevent accidental deletion of internal Apple virus protection on iMac

The built-in anti-malware has prevented various add-on anti-malware apps from deleting parts of macOS, too.

You’ll want Time Machine or another scheduled backup as part of your anti-malware practices, as well. This on the off chance something important does get deleted, or corrupted, or the hardware damaged.

Some of the storages hardware vendors can provide add-on apps, unnecessary for most storage use, and those add-on apps can sometimes get tangled.

It’s also possible the storage hardware is simply failing.

Deleting stuff not understood can also sometimes end badly, unfortunately.

Please download and run (free) EtreCheck, and when the run completes share the report to the clipboard. Then open a new reply here, and press the additional-text button that looks like a printed page to get a text input box big enough to paste the hardware and software configuration report here, and paste and post that report here.

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kennethfromgrange wrote:

whew! thank you i was worried i had

Why did you think you had?