How to delete a Catalina Beta from a disk with Dual-Boot Mojave and Catalina Beta I have a disk with DualBoot Mojave and Catalina Beta in a single container. Catalina Beta has two volumes: 'MacOSBeta' and 'MacOSBeta - Data'.

I want to delete the Catalina Beta os. Is it as simple as deleting the Catalina Beta volumes?
Yes, APFS containers make it trivial to erase a volume since the free space commingles, you can walk away from the data once you’re sure you have a back up or don’t need one.