Prior to macOS High Sierra, and on drives other than solid state drives (SSDs), the default file system is HFS+, which it inherited from the classic Mac OS. Operating system designer Linus Torvalds had criticized HFS+, saying it is "probably the worst file system ever", whose design is "actively corrupting user data". He criticized the case insensitivity of file names, a design made worse when Apple extended the file system to support Unicode.
Prior to macOS High Sierra and on drives other than solid state drives (SSDs) the default file system is HFS+ which it inherited from the classic Mac OS Operating system designer Linus Torvalds had criticized HFS+ saying it is "probably the worst file system ever" whose design is "actively corrupting user data" He criticized the case insensitivity of file names a design made worse when Apple extended the file system to support Unicode