The CD File System
If you need the CD to be readable by several different platforms such as DOS, Macintosh, OS/2, Windows and Unix, you must activate the ISO 9660 file system in your CD burning program. Files and directories must comply with the following (8+3) specifications in order to comply with the ISO 9660 standards for CDs.
JolietChoose the Joliet File System if you would like to use file names with up to 64 characters including blank spaces. This is the standard option for most CDs. Joliet creates a standard DOS (8+3 characters) for each file, so that the CD can read on systems on DOS systems or on earlier versions of Windows.
Even if you choose the Joliet File System, you should eliminate blank spaces from your file and directory names.
Instead of "My File.Pdf", use: