Data Recovery and Digital Storage Glossary
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0-9
- Unclosed CD
An unclosed audio CD is one that has not been "finalized" by the CD-R/RW drive. An unclosed CD cannot be read by any standard audio CD player or any CD-ROM drive until it has been closed. A CD in the unclosed state may only be read by the CD-R/RW drive that created it. Once the CD has been "finalized," it may then be read on any CD-ROM drive and standard audio CD player.
- UDF
Universal Disc Format. A file system for use with packet writing to optical media, such as CD-RW discs. Your computer requires special software to read UDF discs.
- USB
Universal Serial Bus. A means of attaching devices to your computer (such as Zip® drives, Jaz® drives, printers, scanners, etc.). USB allows up to 128 devices to be connected to your computer (using hubs and other connection devices); however, all connected devices share the data transfer rate. You can connect and disconnect devices to your computer, while it is running, without having to worry about setting device IDs, Switches, or terminators required by many other interfaces.
- USB 1.1 transfers data at rates of up to 12 Mb/s.
- USB 2.0 transfers data at rates of up to 480 Mb/s.
- USB 1.1 transfers data at rates of up to 12 Mb/s.
