23
GB
6
Defragmenting
A hard disk can be defragmented using the DOS command 'defrag' or a similar
tool from other operating systems. Due to the fact that files are constantly
deleted and new ones written to the hard disk, files are no longer grouped
together in physically contiguous blocks but instead are scattered, i.e.
fragmented, over the entire hard disk. Defragmentation rewrites the files so
that they are put back together again. This does not affect the directory
structure or the data contents. The advantage of defragmentation is that it
allows files to be accessed quicker by simplifying the searching process. We
strongly recommend defragmenting your hard disk before writing a CD.
Disc-at-Once
Not all drives support the procedure of writing a CD in a single process. As soon
as the disc/CD is complete, it can no longer be written to (single session CD).
EPP
EPP stands for Enhanced Parallel Port and refers to an extended standard of
the parallel interface which allows higher data transfer rates and makes it
possible to connect several devices.
ECP
stands for Extended Capability Port and is a more powerful version of the EPP.
Finalizing/ End disc / Close disc
Completely finishing a CD. Necessary (according to Red Book regulations) for
audio CDs which cannot be read by normal reading devices (CD players) if they
have not been finalized. Also, the definitive end of a data CD. It is not possible
to write anything else on a finalized CD.
Finalization consists of a lead-in and a lead-out (as with fixing) with a final
table of contents. Because only one lead-in and one lead-out are permitted on
an audio CD, any fixing here will automatically finish the CD.
Fixing
Writing a lead-in and lead-out area for a session. This concludes the session. All
data from the session and from any previous sessions can be read by normal CD-
ROMs. This process requires an enormous amount of space, using up approximately
15 MB. This space is definitively lost for other recordings. This means that less
data can be written on multisession CDs than on single session CDs.
Glossary - List of key words
