Freecom Technologies II User Manual

Page 22

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FREECOM Portable II Series

22

GB

5

Mixed Mode CDs
A CD which contains both computer data and audio data is known as a Mixed

Mode CD. The computer data is stored on the first track. All the other tracks

contain audio data. Modern CD players do not reproduce the first track. Older

models, however, will try to "play back" the computer data which, in some

cases, can cause damage to the stereo system.

Multisession

A data CD can be written in several sessions. This must be set accordingly while

writing. Typical instances where multisession CDs are used are regular backups

and Photo CDs which are gradually filled up.

Multitasking

Windows allows you to open several windows simultaneously. This is known as

multitasking. When writing CDs, only the writing software window should be

open (running), for full and exclusive use of the computer's resources. Screen

savers, modems and network functions should be deactivated as they all use up

computer resources which, in extreme cases, may disrupt the writing process.

On-the-Fly

Writing directly onto a CD-R without creating a physical image. If it is not possible

to gain fast access to the source files, the writing process cannot be carried out

successfully ("Buffer Underrun"). Only small amounts of data with simple data

structure should be written On-the-Fly. The source files should be copied onto

the hard disk.

Orange Book

The Orange Book contains the specifications for CD-R (recordable CDs). These

CDs contain no information other than some special data (ATIP Codes), and

they can be written according to any of the other color book standards.

Manufacturers of blank CDs have to abide by the regulations in the Orange

Book.

Packet Writing

A method of writing CDs which makes it possible to write data in smaller blocks

(packets) than is the case with the usual Track-at-Once or Disc-at-Once procedures.

This procedure allows data blocks to be written onto the CD-R without having

to finish the particular track. A further advantage of Packet Writing is the simple

updating of existing files. Data can be simply added without having to rewrite

the file directory each time.

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