Creating the error correction file

dvdisaster Version 0.72.6 / 0.79 (devel-3) | To the Internet version

Contents
News
Overview
Howtos
· | The big picture
· | Scanning media for errors
· | Putting error correction data on a separate file
| - | Decision help
| - | Basic settings for reading
| - | Creating the error correction file
| - | Archiving error correction files
| - | Advanced settings
· | Putting error correction data on the medium
· | Recovering media images
· | Getting information about images and error correction data
· | Testing image compatibility
· | Dialogs and buttons
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Questions and Answers
Bug reporting
Creating error correction files |
from a medium
Please make sure that dvdisaster has been configured as described in the basic settings section as some selections might create sub optimal error correction data. The next steps depend on the source for the error correction data. Select between these two ways:
| Create error correction file from a CD/DVD/BD medium |  | Create error correction file from an ISO image
|  | Insert the medium you want to read into a drive which is directly connected to your computer. You can not use network drives, software drives and drives inside virtual machines.
|  | Close any windows which may be opened by your operating system for viewing or performing the medium contents. Wait until the drive has recognized the medium and the medium has spun down.
|  | Select the drive containing the medium in dvdisasters drop down menu.
|  | Select a directory and file name for storing the ISO image.
|  | Create the ISO image from the medium by clicking the "Read" button.
Watch the reading progress. Wait until the medium has been completely read. If the medium turns out to contain defective sectors it will not be possible to create error correction data.
Screen shot: Reading the image.
|  | Select a directory and name for storing the error correction file.
|  | Create the error correction file by clicking the "Create" button.
|  | Wait until the creation process finishes. This may take a while depending on the image size and the selected redundancy. For example creating an error correction file using the "normal" redundancy setting will take about 5 minutes for a 4GB sized DVD image and using standard hardware.
|  | Wrapping up. You can delete the image file now. However you must keep the error correction file and, even more important, protect it from being damaged. Refer to the next page for some suggestions about error correction file archival.
Error correction file archival...

Copyright 2004-2014 Carsten Gnörlich. Verbatim copying and distribution of this entire article is permitted in any medium, provided this notice is preserved.