You can make a difference in the Apple Support Community!

When you sign up with your Apple Account, you can provide valuable feedback to other community members by upvoting helpful replies and User Tips.

Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

trickyhammer Author

Level 1

5 points

Slow iMac after Big Sur update. EtreCheck report attached

Can someone tell me what I have to do ! Thanks

Report

iMac 21.5″, macOS 11.0

Posted on Dec 11, 2020 9:50 AM

Top-ranking reply

HWTech

Level 9

60,578 points

Posted on Dec 11, 2020 7:21 PM

Uninstall CCCleaner by following the developer's instructions. Cleaning apps are not needed on a Mac and they usually cause more problems than they solve.

Run Disk Utility First Aid on the drive. It wold be best to select the "Fusion Drive" to scan. Even if First Aid reports everything is "Ok" click on "Show Details" and check to see if there are any unfixed errors listed. If there are unfixed errors listed, then the drive will need to be erased and you will need to restore from a backup or clone.

If there are no unfixed errors, then try reinstalling macOS over top of itself which should not affect your apps or data. However, make sure to have a good backup just to be safe.

Run the Apple Diagnostics.

View in context

Slow iMac after Big Sur update. EtreCheck report attached

Similar questions