dvdisaster Version 0.70 | To the Internet version

Contents

Overview
Examples and screen shots
· | Scanning media for errors
· | Creating error correction data
· | Reading defective media
· | Recovering media images
· | Getting information about images and error correction data
· | Configuration
| - | General
| - | Reading
| - | Error correction/files
| - | Error correction/images
· | Command syntax
Download
Questions and Answers
Background information

### Error correction settings

More information on this form follows down this page.

Selection of error correction method

Select "Augmented Image (RS02)" to store the error correction data directly in the image.

Maximum image size

dvdisaster needs to know the total space available on the medium. From this value the unused space is calculated and filled with error correction information when creating an augmented image.

"Use smallest possible size from following table (in sectors)": When this option is activated dvdisaster assumes that you want to use the smallest possible medium (CD or DVD). The augmented image size will not exceed the respective size.

The typical capacities of an 80min CD and one and two layered DVDs are pre-defined in the table. If you own media with different sizes you can enter the values in the respective rows (in sectors of 2KB size).

The "query medium" button takes the medium capacity from the drive; this may return wrong values for certain drives and media. The yellow arrow resets the value to the last saved one.

"Use at most ... sectors": Use this option to override the above settings; the augmented image will be expanded to the size given in this field. This allows for the creation of DVD-sized augmented images which would normally be fitted to CD size.

Advance notices:

- For technical reasons the augmented image may be a bit smaller than the above values.
- Do not enter values which would lead to "overburning" the medium, e.g. which are larger than the nominal medium capacity.
- When the image is smaller than one third of the medium capacity, the augmented image may not fill the medium completely since the maximum possible redundancy is 200%.

Memory utilization

dvdisaster optimizes access to the image and error correction data by maintaining its own cache. The preset of 32MB is suitable for most systems.

Copyright 2004-2008 Carsten Gnörlich. Verbatim copying and distribution of this entire article is permitted in any medium, provided this notice is preserved.