From: Sunnyvale, CA (Unite
What characters are allowed for ISO 9660 CDs?
The following characters are allowed:
Character set ISO9660:
i.e. only capital letters, numbers and CD-Rs
Character set DOS:
All characters which are also allowed by the DOS file system. the following signs are not allowed: Small letters, special symbols with ASCII Code<=32, DOS special symbols such as '.',':',';','[',']','\','/','?','"','*','<','>','|',' ' (CD-Rs). In contrast a large number of the characters via ASCII Code 127 ('Ä','Ö','Ü',...) are allowed.
Unfortunately DOS may not be able to read CDs with characters like this as the sort sequence of such characters hasn't been defined anywhere and DOS drivers can only read from CDs with sorted file entries.
Character set ASCII:
Here small letters are also allowed. Files of this kind can not be opened by DOS! In contrast, characters with ASCII Code 127 or higher are not allowed.
Character set Joliet:
All characters are allowed, apart from the following: