CDFS = Compact Disc File System:
Although the following may be confusing @ first glance,
after thoroughly reading through this material, Users hopefully will
better understand these slight Technological changes.
The Windows XP Professional Compact Disc File System (CDFS)
can read Compact Discs (CDs) formatted according to the ISO 9660 file
system standard. The ISO 9660 specification defines three methods, or
interchange levels, for recording and naming files on a CD. Windows XP
Professional supports up to interchange level 3.
Windows XP Professional also supports Joliet, an extension to ISO 9660,
which supports CDs that are recorded using file names containing Unicode
characters. Joliet supports file and folder names on CDs as follows:
A.) File and folder names can contain up to 64 Unicode characters.
B.) Folder names can contain file name extensions.
C.) Folder hierarchy can be recorded deeper than 8 levels.
CDFS does not support the Rock Ridge Interchange Protocol extensions to
ISO 9660 and reads only the ISO 9660 structures on such discs.
If the computer uses a compatible CD-ROM drive, Windows XP
Professional can also read CDs recorded by using the following standards:
1.) Red Book (CD-Audio), including Enhanced CD (Music
2.) Yellow Book (CD-ROM)
4.) White Book (Video CD)
5.) Photo CD
6.) Orange Book Part II (CD-recordable, including multisession) and Part
7.) Blue Book (CD Extra)
Users may require a special Program or Player to interpret the information
on CD-XA, White Book, and Photo CDs. And... Windows XP Professional cannot
read CD-R or CD-RW discs that have not been closed by the writing
Windows XP Professional provides integrated support for writing data to
CD-R and CD-RW. When writing data to CD, Windows XP Professional
automatically uses the Joliet and ISO 9660 formats. When writing audio
files to CD, Windows XP Professional uses the Red Book format. See: CD
CDFS, or CD-ROM File System, is a
relatively simple format defined in 1988 as the read-only formatting
standard for CD-ROM media. Windows 2000 implements ISO 9660-compliant CDFS
in \Winnt\System32\Drivers\Cdfs.sys, with long file name support defined
by Level 2 of the ISO 9660 standard. Because of its simplicity, the CDFS
format has a number of restrictions:
Directory and file names must be
fewer than 32 characters long.
Directory trees can be no more
than eight levels deep.
CDFS is considered a legacy
format since the industry has adopted the Universal Disk Format (UDF)
as the standard for read-only Media.
- Compact Disc File System:
(CD-ROM File System) - The Win9x
32-bit protected mode File System
Driver (FSD) handles CD-ROM Drives in Win95/98. CDFS.vxd uses the
Windows Vcache disk cache to buffer data from CD-ROM in memory to
speed up data retrieval. CDFS.vxd replaced the earlier 16-bit real
mode MSCDEX.EXE used in DOS/Windows 3.1.
Remember, Windows MUST correctly
identify the Controller to correctly identify CD Devices on said
- Types of Windows Drivers: Types
of Kernel-Mode Drivers - CDFS File System Drivers (FSDs).
File System Drivers include FAT, NTFS
- An alternate CDFS.VXD CD Driver on
Win9x to show Audio CD's as WAV files IN THE FILE SYSTEM! This
replacement driver shows WAV files in a variety of qualities. It works
on any CD drive that Win9X supports.
Rename the old CDFS.VXD to CDFS.old for archive purposes. From cyber7.
(Universal Disk Format) - A File System for Optical
Media Storage developed by the Optical
Storage Technology Association (OSTA).