How do I delete Catalina?
Can I delete Catalina, revert to Mojave or was it High Sierra. Catalina is disrupting my business. My peripherals aren't supported.
MacBook Pro 15", macOS 10.15
I recommend also partitioning your hard drive to reinstall the older operating system on a separate part of the hard drive. This avoids the lengthy reinstall process once you are ready to install the new system:
https://support.apple.com/guide/disk-utility/partition-a-physical-disk-dskutl14027/mac
