CDFS/UDFS File Systems (Windows Embedded CE 6.0)
1/6/2010
The compact disc file system (CDFS) and the universal disc file system (UDFS) are used to read CDs, DVDs, and CD-ROMs. For navigating and audio/video playback, CDFS uses the ATAPI block driver, and UDFS uses the USB block driver or the ATAPI block driver.
CDFS follows the ISO 9660 specification and supports long file names.
UDFS follows UDF revisions 1.02 through 2.50. These versions of UDF specifications replace CDFS for optical media file systems that support live file systems in addition to mastered media.
Implementing CDFS
The following table shows the environment variables to set to use the CDFS.
| Environment variable | Catalog Item |
|---|---|
SYSGEN_CDFS |
CDFS |
SYSGEN_ATAPI |
ATAPI CD/DVD-ROM |
For detailed information about registry values that affect CDFS, see CDFS Registry Settings.
Implementing UDFS
The following table shows the environment variables for UDFS.
| Environment variable | Catalog Item |
|---|---|
SYSGEN_UDFS |
CDFS/UDFS |
SYSGEN_USB |
USB |
SYSGEN_USB_STORAGE |
USB CD/DVD-ROM |
SYSGEN_ATAPI |
ATAPI CD/DVD-ROM |
For detailed information about registry values that affect UDFS, see UDFS Registry Settings.
See Also
Reference
Concepts
CDFS Registry Settings
Storage Management