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documentation/en/howtos90.php

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+<?php
+# dvdisaster: English homepage translation
+# Copyright (C) 2004-2009 Carsten Gnörlich
+#
+# UTF-8 trigger: äöüß 
+#
+# Include our PHP sub routines, then call begin_page()
+# to start the HTML page, insert the header, 
+# navigation and news if appropriate.
+
+require("../include/dvdisaster.php");
+begin_page();
+?>
+
+<!--- Insert actual page content below --->
+
+<h3>Testing image compatibility</h3>
+
+<b>Why dvdisaster uses ISO images.</b> 
+Some dvdisaster functions work on image files stored on hard disk.
+CD/DVD/BD drives are too slow for carrying out the required access
+patterns, and they would wear out quickly. However hard disks are designed
+for this type of access, and they do them quickly and without wear.<p>
+
+<b>Testing image compatibility is important.</b> 
+During the work with dvdisaster you can (and sometimes must) use ISO images
+which have been created by third-party software. Unfortunately ISO images
+are only informally standardized. Typically all programs will produce
+the same images when advised to use the ".iso" file format, but it is
+better to make sure that a usable ISO image has been created:
+Processing a non-iso image with dvdisaster will result in
+unusable error correction data. Especially, formats like 
+<b>.nrg are not suitable</b> for processing with dvdisaster.
+<p>
+
+<b>Possible scenarios.</b> The following situations require exchanging
+ISO images between dvdisaster and a third party software:<p>
+
+<b>a) Creating error correction files from ISO images made by a CD authoring software</b><p>
+
+A CD/DVD/BD authoring software is used to create an ISO image.
+This image is used for writing the medium and for creating the
+error correction file. When using the authoring software for the first time
+with dvdisaster, make sure that 
+the <a href="howtos91.php">image was written to the medium without 
+modifications</a>.<p>
+
+
+<b>b) Augmenting ISO images with error correction data</b><p>
+
+dvdisaster adds "invisible" error correction data to the medium in order to
+minimize interference with other applications.
+Therefore it is possible that some CD/DVD/BD writing software will not properly 
+write the error correction data to the medium. Make sure that your writing
+software does <a href="howtos92.php">correctly transfer the error correction data</a> when using it with augmented images for the first time.
+
+<!--- do not change below --->
+
+<?php
+# end_page() adds the footer line and closes the HTML properly.
+
+end_page();
+?>