I have a Macbook where I have a dual boot setup with elementary OS 5 Hera and macOS. The original installation was from scratch with a new SSD where I partitioned and installed both successfully. I now want to upgrade from Hera/5 to Odin/6 on the Linux partitions.
I created a bootable USB using balena Etcher and successfully booted to demo mode. If I boot to install mode and choose Custom Install, I can select the Linux partitions to use but the EFI partition displays as "too small".
Since major upgrades, like 5 to 6, require backing up data and doing a full install, how does this happen on existing dual boot setups? (I see another user has a similar question from a month ago that remains unanswered.) I swear I did not have this problem when working with Ubuntu years back. But, I might have been using a virtual machine so I could do an all-or-nothing install.
Do I have to do partition/erase work on the Mac side in Disk Utility first or use the Recovery HD for some work? How can I get this done?