1 is only true by default, both HFS and APFS have case sensitive options . NTFS also behaves like you described, and I believe the distinction is that the files

1 is only true by default, both HFS and APFS have case sensitive options . NTFS also behaves like you described, and I believe the distinction is that the filesystems are case-retentive, so this will work fine: $ echo yup > README.txt $ cat ReAdMe.TXT yup $ ls README.txt Maybe the cursed version of the filesystem story is that goddamn Steam refuses to install on the case sensitive version of the filesystem, although Steam has a Linux version. Asshats