Running RetroArch 1.8.2 on OS X Catalina w/ the latest point release as of Christmas.
I have discovered that some things aren’t working in Catalina. Specifically, loading anything from the User’s home folder. I haven’t triple-checked - [home]/Library MIGHT work, but anything in the Documents folder does not.
Starting in Catalina, Apple has split the main OS partition from the user data. That is, the main OS partition is now a read only volume, and all of the home folders, etc. are on an overlay partition of some kind.
I don’t have my MacBook handy right this minute, but when I do have it, I’ll post the partition mappings/mountpoints.
Symptoms are: when using the directories menu, several of the folders are not found. RetroArch thinks that my Desktop, Documents, and Downloads folders, etc. are empty. Finder shows they are not empty.
Strangely enough, if I move the RetroArch folder out of documents, and relaunch RetroArch, the folder is recreated again without incident. However, the UI still can’t access those files. (Game Controllers are unconfigured, Can’t find any Games if they are inside my home folder, etc.
As a temporary workaround, I have moved my Games into a disk image, and copied the contents of documents/RetroArch folder into another disk image. I mount these images before running RetroArch, and then change the directory browser to look for my stuff in the two disk images (inside /Volumes/[image name]/).
I will probably check existing bug reports and create a new one if needed when I return home.