User`s guide

Virtual CD v4 Documentation
Page 17 of 17
Settings for Reading and Compressing Data
This dialog allows precise definition of the method used to read data from the source
CD. These are the most important options for successful creation of a virtual CD!
When you insert the source CD, Virtual CD analyzes the performance of its CD-ROM
drive and the structure of the source-CD data, and suggests a "conservative" choice of
settings. You can change these settings as desired.
The first select list lets you choose from a range of data readout configurations. You
can change the individual settings to adapt the configuration to your needs.
Fast sector read
Fast sector readFast sector read
Fast sector read
With this option, sectors are read in blocks rather than individually. This is faster, on
the one hand, but on the other hand, if a defective sector is found in a given block then
the other sectors in that block must be read again individually. In most cases this is
the preferred configuration. If a virtual CD created using this method doesn't work,
however, try deselecting this option to improve the read quality.
Correct bad sectors
Correct bad sectorsCorrect bad sectors
Correct bad sectors
Some copy-protection methods are based on defective sectors, which can simply be
reproduced by Virtual CD when this option is selected. Detecting defective sectors
does take more time, however, which means creating a virtual CD with this setting can
take up to a number of hours. Still, this option is recommended for certain CDs, such
as "home-made" CDs, for example, because CD-writers often create bad sectors. This
option is not necessary for audio CDs.
Fast detection o
Fast detection oFast detection o
Fast detection of bad sectors
f bad sectorsf bad sectors
f bad sectors
This option is available only if the Correct bad sectors option is selected.