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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

UDFS Registry Settings

Concepts

CDFS Registry Settings
Storage Management

Other Resources

Included File Systems
Block Drivers