Examples

dvdisaster Version 0.70

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

· Command syntax

Download

Questions and Answers

Background information

Recovering the medium image

To recover a defective medium you must first try to read as much data as possible from it. Then you need the appropriate error correction data which you have hopefully generated at a time when the medium was still fully readable.

1. Select the image file.

The filechooser button symbol opens the file chooser.

2. If you are using error correction files, select the respective error correction file. Leave this entry blank when working with augmented images.

The symbol opens the file chooser.

3. Click on the "Fix" button.

4. Watch the recovery progress.
It is normal to experience phases of high hard drive activity during image reconstruction

When the image has been successfully recovered, transfer it to a new medium using a CD/DVD writing software.

Recovering the image using the command line

Recovering requires the following parameters (defaults are given in parenthesis):

-f/ --fix	Recover
-i / --image	Image file (medium.iso)
-e / --ecc	only for RS01: Error correction file (medium.ecc)

No error correction file needs to be specified when augmented images are used.

user@linux> dvdisaster -f -i image.iso -e corrdata.ecc
dvdisaster-0.70 Copyright 2004-2006 Carsten Gnoerlich.
[... remainder of the GPL announcement ...]
Opening image.iso: 2224288 medium sectors.
Fix mode: Repairable sectors will be fixed in the image.
    5 repaired sectors: 708225 59850 69825 79800 199500
    6 repaired sectors: 708226 59851 69826 79801 89776 199501
[... more reports on repaired sectors ...]
    5 repaired sectors: 708224 59849 69824 79799 199499
Ecc progress: 100.0%
Repaired sectors: 33264
Good! All sectors are repaired.
Erasure counts per ecc block: avg = 3.3; worst = 7.



Copyright 2004-2006 Carsten Gn÷rlich. Verbatim copying and distribution of this entire article is permitted in any medium, provided this notice is preserved.