also https://en.wikipedia.org/wiki/Formatted_File_System https://en.wikipedia.org/wiki/Formatted_File_System and https://en.wikipedia.org/wiki/Flash_file_syste

also https://en.wikipedia.org/wiki/Formatted_File_System https://en.wikipedia.org/wiki/Formatted_File_System and https://en.wikipedia.org/wiki/Flash_file_system https://en.wikipedia.org/wiki/Flash_file_system and kind of https://en.wikipedia.org/wiki/Amiga_Fast_File_System https://en.wikipedia.org/wiki/Amiga_Fast_File_System Four file systems named ffs; ffs is popular for file systems