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

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Questions and Answers

Background information

Getting information about images and error correction data

This function provides information about image and error correction data which is already present on your hard disc:

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 the "Verify" button to verfiy the image data with the error correction information.

4. Watch the verfication progress.

Getting the information from the command line

You will need the following parameters (defaults are given in parenthesis):

-t/ --test	Verify
-i / --image	Image file (medium.iso)
-e / --ecc	only for RS01: Error correction file (medium.ecc)

Example for verifying an image with the respective error correction file:

user@linux> dvdisaster -t -i image.iso -e corrdata.ecc
dvdisaster-0.70 Copyright 2004-2006 Carsten Gn÷rlich.
[... remainder of the GPL announcement ...]
/dvd/image.iso: present, contains 2224288 medium sectors.
- good image : all sectors present
- image md5sum : 55cdd507e8d96af0da0667ce4365c7ae
/dvd/corrdata.ecc: created by dvdisaster-0.62
- method : RS01, 32 roots, 14.3% redundancy.
- requires : dvdisaster-0.55 (good)
- medium sectors : 2224288 (good)
- image md5sum : 55cdd507e8d96af0da0667ce4365c7ae (good)
- fingerprint match: good
- ecc blocks : 20428800 (good)
- ecc md5sum : 4bdf5ed398e7662ac93c9d08e1ba9ff2 (good)

Example for checking an augmented image:

user@linux> dvdisaster -t -i image.iso
dvdisaster-0.70 Copyright 2004-2006 Carsten Gn÷rlich.
[... remainder of the GPL announcement ...]
/dvd/image.iso: present, contains 2281713 medium sectors.
- good image : all sectors present
- data md5sum : 1b6ad314c0cbaa1874841c41ee05a620
Error correction data: created by dvdisaster-0.70
- method : RS02, 94 roots, 58.4% redundancy.
- requires : dvdisaster-0.66 (good)
- medium sectors : 2281713 (good)
- data md5sum : 1b6ad314c0cbaa1874841c41ee05a620 (good)
- crc md5sum : 105381481a7d5e490d3a53ae66e19f79 (good)
- ecc md5sum : 5d04d3746a228dd8ad23442aeb80d838 (good)



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