Compact Disk File System
Windows 2000 provides support for the ISO 9660–compliant CDFS, which supports long file names as listed in the ISO 9660 Level 2 standards.
When creating a CD-ROM to be used on Windows 2000, you must adhere to the following standards:
All directory and file names must have fewer than 32 characters.
All directory and file names must be in capital letters.
The directory tree cannot exceed 8 levels from the root.
File name extensions are not mandatory.
Important
CDFS adheres to ISO 9660 standards and therefore does not support lowercase file names. When you use CDFS to access a file or directory with a lowercase file name on a CD-ROM, you get a "File not found" error message.