Can I reinstall the previous MacOS?

I updated to MacOS Ventura recently and I had my external hard drive plugged in when i did it. Now that my computer is updated, it will not mount my external. Can I go back to the previous OS?

MacBook Pro 13″, 10.10

Posted on Aug 2, 2023 12:18 PM

Reply
Question marked as Top-ranking reply

Posted on Aug 3, 2023 11:08 AM

Hello tonebloke,


It isn't generally recommend to revert to a previous OS installation. The goal will be to determine why your external hard drive isn't mounting now. First, try restarting your Mac, then connect your external drive again: Ways to start up your Mac


If it still won't connect or mount, you may need to be repaired. You can try this from Disk Utility:

How to repair a Mac disk with Disk Utility


If your external drive still won't mount in Disk Utility, next would be to test the connection to another port, using another cable, or even testing the connection with another computer. That will narrow down where the issue might be coming from. Reply back with how it goes.


Take care.


2 replies
Question marked as Top-ranking reply

Aug 3, 2023 11:08 AM in response to tonebloke

Hello tonebloke,


It isn't generally recommend to revert to a previous OS installation. The goal will be to determine why your external hard drive isn't mounting now. First, try restarting your Mac, then connect your external drive again: Ways to start up your Mac


If it still won't connect or mount, you may need to be repaired. You can try this from Disk Utility:

How to repair a Mac disk with Disk Utility


If your external drive still won't mount in Disk Utility, next would be to test the connection to another port, using another cable, or even testing the connection with another computer. That will narrow down where the issue might be coming from. Reply back with how it goes.


Take care.


This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Can I reinstall the previous MacOS?

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