Freecom Technologies manual Gb, FREECOM Portable II Series, Mixed Mode CDs

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FREECOM Portable II Series

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)thanisthecasewiththeusualTrack-at-OnceorDisc-at-Onceprocedures. 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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