How to Merge Partitions / Volumes
I used a Mojave OS for about three months, then I decided to update to the Catalina OS. At the point of installation, I experienced a few challenges which made me partition the PC. Now I have installed the new OS, and at the same time deleted the old (Mojave) OS. But my PC is showing me that I have a total hard disk space of 60GB, instead of 128GB.
How can I merge the partitions together to have one disk size of 128GB?
MacBook Air 13", macOS 10.15