Although the specification allows for alternative sector sizes, you will rarely find anything other than 2 KiB.Īnother quirk of the system is that it has several numbering formats and multi-byte numbers are often represented in both-endian format. Linux's VFS displays lower case filenames to the user despite the CD contents actually containing upper case characters.Īn ISO 9660 sector is normally 2 KiB long. Many operating systems also allow lower case letters and other characters. Further there is a semicolon which separates the visible file name from its version number suffix. Strictly, filenames may only consist of uppercase letters A-Z, digits,ĭots, and underscores. It seems that some operating systems also create non-compliant CDs, so beware! The main example of this is the character set that is available for file names.
ISO 9660 is not a complex file system, but has a few quirks that are worth remembering.
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