329 lines
11 KiB
HTML
329 lines
11 KiB
HTML
<html>
|
|
<head>
|
|
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
|
|
<title>when augmenting images with error correction data</title>
|
|
<link rel="stylesheet" type="text/css" href="../include/dvdisaster.css">
|
|
</head>
|
|
<body>
|
|
|
|
<!--- Title header --->
|
|
<table width="100%" cellpadding="0" border="0">
|
|
<tr>
|
|
<td align="left">
|
|
<font size="+3"><b>dvdisaster</b></font>
|
|
<i>Version 0.72.2 / 0.79 (devel-3)</i>
|
|
</td>
|
|
<td align="right">
|
|
<font size="+3"> </font><a href="http://dvdisaster.net/en/">To the Internet version</a>
|
|
<a href="../de/howtos92.html"></a>
|
|
|
|
<a href="../ru/howtos92.html"></a>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<!--- Language chooser or separator --->
|
|
<table width="100%" cellpadding="0" border="0">
|
|
<tr bgcolor="#000000">
|
|
<td colspan="2" width="100%"><img width=1 height=1 alt=""></td>
|
|
</tr>
|
|
<tr><td colspan="2" width="100%" height="10">
|
|
<img width=1 height=1 alt="">
|
|
</td></tr>
|
|
</table>
|
|
|
|
<!--- Main body (Navigation, actual page content, optional news column) --->
|
|
<table width="100%" cellspacing=0>
|
|
<tr>
|
|
<!--- Navigation --->
|
|
<td bgcolor="#f0f0f0" valign="top" width="20%">
|
|
<table width="100%" cellpadding="10">
|
|
<tr>
|
|
<td>
|
|
<font size="-1"><b>Contents</b></font>
|
|
<table width="100%" cellpadding="0" cellspacing="0">
|
|
<tr bgcolor="#000000">
|
|
<td width="100%"><img width=1 height=1 alt=""></td>
|
|
</tr>
|
|
</table><p>
|
|
|
|
<table width="100%">
|
|
<tr><td colspan=3><font size="-1"><a href="news.html">News</a></font></td></tr>
|
|
<tr><td></td><td></td><td height="10"></td></tr>
|
|
<tr><td colspan=3><font size="-1"><a href="index.html">Overview</a></font></td></tr>
|
|
<tr><td></td><td></td><td height="10"></td></tr>
|
|
<tr><td colspan=3><font size="-1"><a href="howtos.html">Howtos</a></font></td></tr>
|
|
<tr><td valign="top" width="1%">·</td><td colspan=2><font size="-1"><a href="howtos60.html">The big picture</a></font></td></tr>
|
|
<tr><td valign="top" width="1%">·</td><td colspan=2><font size="-1"><a href="howtos10.html">Scanning media for errors</a></font></td></tr>
|
|
<tr><td valign="top" width="1%">·</td><td colspan=2><font size="-1"><a href="howtos20.html">Putting error correction data on a separate file</a></font></td></tr>
|
|
<tr><td valign="top" width="1%">·</td><td colspan=2><font size="-1"><a href="howtos30.html">Putting error correction data on the medium</a></font></td></tr>
|
|
<tr><td valign="top" width="1%">·</td><td colspan=2><font size="-1"><a href="howtos40.html">Recovering media images</a></font></td></tr>
|
|
<tr><td valign="top" width="1%">·</td><td colspan=2><font size="-1"><a href="howtos50.html">Getting information about images and error correction data</a></font></td></tr>
|
|
<tr><td valign="top" width="1%">·</td><td colspan=2><font size="-1"><a href="howtos90.html">Testing image compatibility</a></font></td></tr>
|
|
<tr><td valign="top"></td><td>-</td><td><font size="-1"><a href="howtos91.html">with error correction files</a></font></td></tr>
|
|
<tr><td valign="top"></td><td>-</td><td><font size="-1">when augmenting images with error correction data</font></td></tr>
|
|
<tr><td valign="top" width="1%">·</td><td colspan=2><font size="-1"><a href="howtosa0.html">Dialogs and buttons</a></font></td></tr>
|
|
<tr><td></td><td></td><td height="10"></td></tr>
|
|
<tr><td colspan=3><font size="-1"><a href="download.html">Download</a></font></td></tr>
|
|
<tr><td></td><td></td><td height="10"></td></tr>
|
|
<tr><td colspan=3><font size="-1"><a href="qa.html">Questions and Answers</a></font></td></tr>
|
|
<tr><td></td><td></td><td height="10"></td></tr>
|
|
<tr><td colspan=3><font size="-1"><a href="feedback.html">Bug reporting</a></font></td></tr>
|
|
</table>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
</td>
|
|
<td></td>
|
|
|
|
<!--- Actual page contents --->
|
|
<td valign="top" width="77%" rowspan="2">
|
|
|
|
<!--- Insert actual page content below --->
|
|
|
|
<h3>Checking compatibility for images augmented with error correction data</h3>
|
|
|
|
<b>Motivation:</b> dvdisaster can put error correction data
|
|
<a href="howtos30.html">together with the user data on the medium</a>.
|
|
The error correction data is appended to the ISO image in a way invisible
|
|
to most applications in order to not interfere with them.<p>
|
|
|
|
<b>Possible incompatibility:</b> The CD/DVD/BD writing software may also
|
|
be unable to see the error correction data. While being unlikely it is
|
|
possible that the writing software will truncate or damage the error
|
|
correction data while creating the medium. In that case the error correction
|
|
will not work.<p>
|
|
|
|
|
|
<b>How to test compatibility:</b><p>
|
|
|
|
Please note that some steps are only sketched out here;
|
|
follow the links to the respective sections to find detailed instructions
|
|
and examples.<p>
|
|
|
|
<table>
|
|
<tr>
|
|
<td width="200px" align="center"><img src="../images/good-cd-ecc.png">
|
|
<p><img src="../images/down-arrow.png"></td>
|
|
<td> </td>
|
|
<td valign="top"><b>First create a medium which was augmented with
|
|
error correction data</b>. Do not forget
|
|
to use the proper <a href="howtos32.html">settings</a> and follow the
|
|
<a href="howtos33.html">step by step</a> instructions. <br>
|
|
Do not use rewriteable DVD or BD media as they may influence the test
|
|
under some circumstances (see <a href="qa20.html#rw">item 3.4 in the
|
|
questions and answers</a>).
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<table>
|
|
<tr>
|
|
<td width="200px" align="center">
|
|
<img src="../images/good-image2.png" border="0"><p>
|
|
<img src="../images/down-arrow.png" border="0">
|
|
</td>
|
|
<td> </td>
|
|
<td valign="top"><b>Create a <i>second</i> image from the <i>written</i>
|
|
medium</b>.
|
|
Use the same <a href="howtos22.html">settings</a> and steps as in
|
|
<a href="howtos23_way=1.html">reading a medium</a> for creating an error
|
|
correction file; however you can stop after the reading has finished as
|
|
we do not need the error correction file.
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<table>
|
|
<tr>
|
|
<td width="200px" align="center">
|
|
<a href="howtosa2.html">
|
|
<img src="../images/select-image.png" border="0">
|
|
<br><img src="../images/down-arrow.png" border="0"></a></td>
|
|
<td> </td>
|
|
<td valign="top"><b>Enter the name of the <i>second</i> ISO image</b>
|
|
which you have just read from the medium. Please note that the following
|
|
test is useless when working with the image which was initially created
|
|
using the CD/DVD/BD authoring software and augmented with dvdisaster.
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<table>
|
|
<tr>
|
|
<td width="200px" align="center">
|
|
<a href="howtosa4.html">
|
|
<img src="images/compare-icon.png" border="0">
|
|
<br><img src="../images/down-arrow.png" border="0"></a></td>
|
|
<td> </td>
|
|
<td valign="top"><b>Start the evaluation</b> by clicking
|
|
on the "Verify" button.</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<!--- begin of screen shot --->
|
|
<table>
|
|
<tr>
|
|
<td width="200px" align="center">
|
|
<a name="snap1"></a>
|
|
<a href="howtos92_expand=1.html#snap1"> <img src="thumbnails/compat-okay-rs02.png" border="0">
|
|
</a>
|
|
</td><td> </td>
|
|
<td valign="top">
|
|
<b>Look at the verification results.</b>
|
|
If you get the green messages "Good image." and "Good error correction data."
|
|
your authoring software and dvdisaster are compatible with respect to
|
|
the augmented images.
|
|
</td>
|
|
</tr>
|
|
</table><p>
|
|
<!--- end of screen shot --->
|
|
|
|
<hr>
|
|
|
|
<a name="err"> </a>
|
|
<b>Possible error causes and remedy:</b><p>
|
|
|
|
<!--- begin of screen shot --->
|
|
<table class="screenshot">
|
|
<tr><td>
|
|
<a name="snap2"></a>
|
|
<b>Typical problem: wrong image size.</b>
|
|
The verification may find out that the image is larger as expected.
|
|
Typically the difference is 150 or 300 sectors for CD media and
|
|
1-15 sectors for DVD/BD media. These might simply be zero padding sectors
|
|
appended by the writing software. To find out if this really is the case
|
|
do the following:
|
|
</td></tr>
|
|
<tr><td align="center">
|
|
<a href="howtos92_expand=0.html#snap2">
|
|
<img src="images/compat-150-rs02.png">
|
|
</a>
|
|
</td></tr>
|
|
<tr><td align="center">Screen shot: Wrong image size.</td></tr>
|
|
</table><table>
|
|
<tr>
|
|
<td width="200px" align="center">
|
|
<img src="../images/down-arrow.png" border="0">
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
<!--- end of screen shot --->
|
|
|
|
<table>
|
|
<tr>
|
|
<td width="200px" align="center">
|
|
<img src="images/fix-icon.png" border="0">
|
|
<p><img src="../images/down-arrow.png" border="0"></td>
|
|
<td> </td>
|
|
<td valign="top"><b>Start a recovery process.</b>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<!--- begin of screen shot --->
|
|
<table>
|
|
<tr>
|
|
<td width="200px" align="center">
|
|
<a name="snap3"></a>
|
|
<a href="howtos92_expand=3.html#snap3"> <img src="thumbnails/compat-dialog-rs02.png" border="0">
|
|
<br><img src="../images/down-arrow.png" border="0">
|
|
</a>
|
|
</td><td> </td>
|
|
<td valign="top">
|
|
<b>Confirm the dialog.</b>
|
|
A dialog will appear asking you if it is okay to remove the superflous
|
|
sectors from the image. Answer "OK".
|
|
</td>
|
|
</tr>
|
|
</table><p>
|
|
<!--- end of screen shot --->
|
|
|
|
|
|
<table>
|
|
<tr>
|
|
<td width="200px" align="center">
|
|
<img src="images/stop-icon.png" border="0">
|
|
<p><img src="../images/down-arrow.png" border="0"></td>
|
|
<td> </td>
|
|
<td valign="top"><b>Stop the recovery process,</b>
|
|
as after truncating the image there is nothing more to do.
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<table>
|
|
<tr>
|
|
<td width="200px" align="center">
|
|
<a href="howtosa4.html">
|
|
<img src="images/compare-icon.png" border="0">
|
|
<p><img src="../images/down-arrow.png" border="0"></a></td>
|
|
<td> </td>
|
|
<td valign="top"><b>Start the verification again</b>
|
|
by clicking on the "Verify" button.</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<!--- begin of screen shot --->
|
|
<table>
|
|
<tr>
|
|
<td width="200px" align="center">
|
|
<a name="snap4"></a>
|
|
<a href="howtos92_expand=4.html#snap4"> <img src="thumbnails/compat-okay-rs02.png" border="0">
|
|
</a>
|
|
</td><td> </td>
|
|
<td valign="top">
|
|
<b>Consider the new results.</b>
|
|
If you now get the green messages "Good image." and "Good error correction
|
|
data." your problem is purely cosmetic: The writing software has indeed
|
|
added zero padding sectors while writing the medium.
|
|
</td>
|
|
</tr>
|
|
</table><p>
|
|
<!--- end of screen shot --->
|
|
|
|
<font color="#800000">If the problem persists after carrying out the above
|
|
steps you can <i>not</i> use the CD/DVD/BD writing software
|
|
for creating media from augmented images.
|
|
Perform the test again using a software from a different vendor.
|
|
</font> <p>
|
|
|
|
<!--- do not change below --->
|
|
|
|
</td> <!--- end of page contents --->
|
|
|
|
</tr>
|
|
|
|
<!---
|
|
<tr valign="bottom">
|
|
<td bgcolor="#f0f0f0">
|
|
<table cellpadding="10"><tr><td><a href="http://dvdisaster.net/legacy/en/index.html"><font size="-1"></font></a></td></tr></table>
|
|
</td>
|
|
<td></td>
|
|
<td></td>
|
|
</tr>
|
|
--->
|
|
</table> <!--- end of main body table --->
|
|
|
|
|
|
<!--- Page footer --->
|
|
<table width="100%" cellpadding="0" border="0">
|
|
<tr><td colspan="2" width="100%" height="10"><img width=1 height=1 alt=""></td>
|
|
</tr>
|
|
<tr bgcolor="#000000"><td colspan="2" width="100%"><img width=1 height=1 alt=""></td>
|
|
</tr>
|
|
<tr>
|
|
<td align="center">
|
|
<font size="-1">
|
|
<i> Copyright 2004-2010 Carsten Gnörlich.<br>
|
|
Verbatim copying and distribution of this entire article is permitted in any medium, provided this notice is preserved.
|
|
</i>
|
|
</font>
|
|
</td>
|
|
</tr>
|
|
<tr bgcolor="#000000"><td colspan="2" width="100%"><img width=1 height=1 alt=""></td>
|
|
</tr>
|
|
</table>
|
|
</body>
|
|
</html>
|