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.

User profile for user: vozjaevjaev
vozjaevjaev Author
User level: Level 1
4 points

Mac Os partition does not show up at startup after resizing Windows partition


I have Mac Os Catalina . I recently installed Bootcamp and made a Windows 10 partition . Everything worked fine and I could switch between partitions fine on startup using option key. Until one day I decided to resize / expand my windows partition using a third party software by shrinking my mac os partition and using the free space to increase my windows partition. Now the only partition I see on start up is Windows Bootcamp and when I go into Disk Utility my mac os partition has “unknown” format and looks like this

Please help me fix this

MacBook

Posted on Sep 23, 2020 8:46 AM

Reply

Similar questions

8 replies

Mac Os partition does not show up at startup after resizing Windows partition

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.
Learn more Sign up