ISO format

This is the international standard for the format logic of CD-ROM folders and files. For the ISO 9660 format, there are regulations for the following two levels.

The file name is in 8.3 format (the name consists of up to 8 characters, half-byte English capital letters and half-byte numerals and the "-" sign, with a file extension of three characters.)

Level 2:

The file name can have up to 31 (MP3 files)/15 (WMA files) characters (including the separation mark "." and a file extension). Each folder contains less than 8 hierarchies.

Extended formats


File name can have up to 64 characters. Romeo:

File names can have up to 128 characters.

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