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thexash

macrumors member
Original poster
Jan 19, 2020
60
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I installed the macOS Big Sur beta on another partition which I named "macOS Beta", now that Big Sur is in release and that I've been using it as primary OS for the past few months (during the beta) I'd like to regain the space taken by the Catalina partition.

Can I just delete the "Macintosh HD" & "Macintosh HD - Data" partitions and be done with it? Is there a way to rename the "macOS Beta" partition? The "Rename" option is greyed out in "Disk Utilty" atm.

Thanks.
 
In Disk Utility.app, in the View menu, select Show All Devices. If you are sure that you don't need Catalina anymore (the data is migrated or whatever), then select the "Container" APFS partition that contains the Macintosh HD and Macintosh HD - Data APFS volumes. Then click Erase. You can make it HFS+ or APFS or whatever. Or you can choose Partition, select the Catalina partition, click the [-] button to remove the partition and add its space to the next partition.
 
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Boot into Big Sur and try using the Finder to rename the partition?
 
I've been using BigSur for a few months so everything is migrated.

I deleted the "Macintosh HD" APFS container and that did the job, it deleted the "- Data" partition aswell. Turns out the "macOS Beta" partition was my first borked install of the first BigSur beta... I removed that too.

Everything's working fine and I got the space back, thanks for the help.
 
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