The Universal Disc Format was promoted by the Optical Storage Technology Association (OSTA), as a single file system for interchange of information in the computer arena OSTA's aim was to develop a UDF-based file format for CD-ROM, Write-Once and Re-Writable products
Universal Disc Format standard of the Optical Storage Technology Association designed to create a practical subset of the ISO/IEC 13346 random-access file system and volume structure format
Universal Disk Format - a file system defined by OSTA UDF is intended to enable file interchange among different operating systems
Uniqueness Database File Windows NT Allows customisation of Windows NT during installation
Unducted Fan A turbine engine with the "fan" section enlarged and exposed for greater performance