What are the correct "Systems" selections in the scanner when wanting to scan arcade ROMs and a handful of consoles? Up to now, I have two profiles set up with one using the the official MAME build and one using an arcade-only build. I have a profile to use the official build to scan console ROMs in specific folders. For example, I have 32x and a2600 checked and have a AssignedSysDefPath set for each in the Systems list. Everything else is unchecked. And I have those folders listed in the ROM-Paths under Settings. For the arcade build, I chose not to import software lists. In the Systems list, everything is checked but I have no AssignedSysDefPath set for anything but in the ROM-Paths I have a folder for ROMs and one for CHD listed.
This setup works fine but I'm wondering if I can modify the official build profile to also scan arcade ROMs and CHDs? But when I put checkmarks on the STANDARD, MECHANICAL, DEVICE and BIOS systems and scan, it tells me at least one path isn't valid. If I assign those systems to my arcade ROMs folder I get a lot of missing ROMs.