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.

Levoy Hurley Author

Level 1

114 points

Safe mode fixed Big Sur?

A couple of weeks ago I decided I would finally move my 2013 MacBook Pro from Catalina to Big Sur (can't go to Monterey). I immediately noticed performance issues, especially in Mail. Obviously if I had searched the forums I would never have done it, but the deed was done and I dreaded the idea of going back. Searched the forums here for hints at a solution. Tried a few things to no avail, then saw a comment from a member who said that he noticed a massive improvement after his Safe Mode test. That's all he did - start in Safe Mode. Of course I thought there was more to it, but it was an easy thing to do. Well, lo and behold - it really worked! Mail was a particular dog and it's working fine now.

So why did a restart in Safe Mode fix Big Sur performance?

MacBook Pro 15″, macOS 11.6

Posted on Jan 7, 2022 3:09 PM

Top-ranking reply

--hi

Level 2

251 points

Posted on Jan 7, 2022 4:16 PM

Maybe reading the text under the title(How to use safe mode on your Mac)will help you answer your question. It tells you what it does. Read it below:

How to use safe mode on your Mac - Apple Support

View in context

Safe mode fixed Big Sur?

Similar questions