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StellarVixen

macrumors 68040
Original poster
Mar 1, 2018
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People are asking same question over and over again, why after installing 10.15 (Catalina) there are two volumes when I open disk utility.

The answer is simple: Apple has introduced new way of organizing system files, everything belonging to OS is moved to read only volume. Everything else not belonging to system is kept on another R/W volume.

I do not know if this shall be pinned or not. I hope people will read this and get answer without needing to open a thread.

 
I had the same question after upgrading. It makes sense why Apple is doing this. Thanks for posting for clarification.
 
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