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UDF File System - Overview

OS/2(R) Warp Server for e-business now provides expanded media exchange capability and support for DVD (Digital Video Disc) drives with its implementation of the UDF (Universal Disk Format) 1.50 file system. The UDF file system specification, defined by the Optical Storage Technology Association (OSTA), is the widely-accepted standard to which DVD devices read/write data. Use of these technologies significantly increases your ability to access and store large amounts of information. For example, a single layer of a DVD-ROM can generally store about seven times more data than a CD-ROM.

Highlights of UDF

  • Large capacity - - UDF can store more data and support a larger number of files than current file systems.
  • Support for file names up to 254 bytes (253 8-bit or 126 16-bit Unicode characters).
  • Maximum file size is equal to the size of the volume.
  • Unlimited directory depth - - UDF does not impose any limitation on the depth of a directory structure.
  • Compatibility with existing CD-ROM formats.
  • Support for DVD-ROM (read-only) and DVD-RAM (rewritable) media.
  • Common and consistent interface to OS/2 file system functions, CHKDSK and FORMAT.
  • Application programming support using existing OS/2 file I/O APIs.

Supported DVD Drives

  • Toshiba SD-M1202
  • Hitachi GD-2500
  • Creative Labs DVD-5240E
  • Philips DRD-5200
  • Sony DDU-220E
  • Panasonic LF-D100
  • AOpen DVD-520S
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