265 lines
10 KiB
HTML
265 lines
10 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<head>
|
|
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
|
|
<title>Error messages</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">
|
|
<span class="fxxl"><b>dvdisaster</b></span>
|
|
<i>Version 0.72.4 / 0.72 (pl4)</i>
|
|
</td>
|
|
<td align="right">
|
|
<span class="fxxl"> </span><a href="http://dvdisaster.net/en/">To the Internet version</a>
|
|
<a href="../cs/qa20.html"></a>
|
|
<a href="../de/qa20.html"></a>
|
|
|
|
<a href="../ru/qa20.html"></a>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
|
|
<!-- Language chooser or separator -->
|
|
<table width="100%" cellpadding="0" border="0">
|
|
<tr>
|
|
<td colspan="2" class="hsep"></td>
|
|
</tr>
|
|
<tr><td colspan="2" style="height: 10px">
|
|
</td></tr>
|
|
</table>
|
|
|
|
<!-- Main body (Navigation, actual page content, optional news column) -->
|
|
<table width="100%" cellspacing=0>
|
|
<tr>
|
|
<!-- Navigation -->
|
|
<td style="background-color:#f0f0f0; vertical-align:top; width:20%;">
|
|
<table width="100%" cellpadding="10">
|
|
<tr>
|
|
<td>
|
|
<span class="fs"><b>Contents</b></span>
|
|
<table width="100%" cellpadding="0" cellspacing="0">
|
|
<tr>
|
|
<td class="hsep"></td>
|
|
</tr>
|
|
</table><p>
|
|
|
|
<table width="100%">
|
|
<tr><td colspan=3><span class="fs"><a href="news.html">News</a></span></td></tr>
|
|
<tr><td></td><td></td><td style="height:10px;"></td></tr>
|
|
<tr><td colspan=3><span class="fs"><a href="index.html">Overview</a></span></td></tr>
|
|
<tr><td></td><td></td><td style="height:10px;"></td></tr>
|
|
<tr><td colspan=3><span class="fs"><a href="howtos.html">Howtos</a></span></td></tr>
|
|
<tr><td></td><td></td><td style="height:10px;"></td></tr>
|
|
<tr><td colspan=3><span class="fs"><a href="download.html">Download</a></span></td></tr>
|
|
<tr><td></td><td></td><td style="height:10px;"></td></tr>
|
|
<tr><td colspan=3><span class="fs"><a href="qa.html">Questions and Answers</a></span></td></tr>
|
|
<tr><td style="width:1%; vertical-align:top;">·</td><td colspan=2><span class="fs"><a href="qa10.html">Technical Questions</a></span></td></tr>
|
|
<tr><td style="width:1%; vertical-align:top;">·</td><td colspan=2><span class="fs">Error messages</span></td></tr>
|
|
<tr><td style="width:1%; vertical-align:top;">·</td><td colspan=2><span class="fs"><a href="qa30.html">Background information</a></span></td></tr>
|
|
<tr><td></td><td></td><td style="height:10px;"></td></tr>
|
|
<tr><td colspan=3><span class="fs"><a href="feedback.html">Bug reporting</a></span></td></tr>
|
|
</table>
|
|
</td>
|
|
</tr>
|
|
</table>
|
|
</td>
|
|
<td></td>
|
|
|
|
<!-- Actual page contents -->
|
|
<td style="vertical-align:top; width:77%;" rowspan="2">
|
|
|
|
<!-- Insert actual page content below -->
|
|
|
|
<h3 class="top">Error messages</h3>
|
|
|
|
<a href="qa20.html#tao">3.1 "Warning: 2 sectors missing at the end of the disc".</a><p>
|
|
<a href="qa20.html#block">3.2 Program blocks right after invocation.</a><p>
|
|
<a href="qa20.html#crc">3.3 What does "CRC error, sector: n" mean?</a><p>
|
|
<a href="qa20.html#rw">3.4 Read errors or wrong image size with -RW/+RW/-RAM media</a><p>
|
|
<a href="qa20.html#dvdrom">3.5 My self-written media is recognized as "DVD-ROM" and rejected.</a><p>
|
|
<a href="qa20.html#freebsd">3.6 No drives appear under FreeBSD.</a><p>
|
|
<a href="qa20.html#v40error">3.7 "Ecc file has been created with version 0.40.7."</a><p>
|
|
|
|
<hr><p>
|
|
|
|
<b><a name="tao">3.1 "Warning: 2 sectors missing at the end of the disc"</a></b><p>
|
|
This warning appears with CD media written in "TAO" (track at once) mode.
|
|
Some drives report an image size which is 2 sectors too large for such media,
|
|
producing 2 pseudo read errors at the end of the medium
|
|
which do <i>not</i> mean data loss in this case.<p>
|
|
|
|
Since the writing mode can not be determined from the medium, dvdisaster assumes
|
|
a "TAO" CD if exactly the last two sectors are unreadable, and trims the image
|
|
accordingly. It is up to you to decide whether this is okay. You can
|
|
advise dvdisaster to treat these sectors as real read errors by using the
|
|
--dao option or
|
|
the preferences tab for reading/scanning.<p>
|
|
|
|
To avoid these problems, consider using the "DAO / Disc at once" (sometimes
|
|
also called "SAO / Session at once") mode for writing single session media.
|
|
<div class="talignr"><a href="qa20.html#top">↑</a></div>
|
|
|
|
|
|
<b><a name="block">3.2 Program blocks right after invocation</a></b><p>
|
|
Using old Linux kernel versions (kernel 2.4.x) the program occasionally
|
|
blocks right after the start and before any actions are
|
|
carried out. It can not be terminated using Ctrl-C or "kill -9".<p>
|
|
|
|
Eject the medium to make the program terminate. Insert the medium again
|
|
and wait until the drive recognizes the medium and spins down.
|
|
Calling dvdisaster again should work now.
|
|
<div class="talignr"><a href="qa20.html#top">↑</a></div>
|
|
|
|
<b><a name="crc">3.3 What does "CRC error, sector: n" mean?</a></b><p>
|
|
The respective sector could be read, but the checksum of its contents does
|
|
not match the value noted in the error correction file. Some possible causes are:<p>
|
|
|
|
<ul>
|
|
<li>The image has been mounted with write permission and
|
|
was therefore altered (typical evidence: CRC errors in sector 64 and in
|
|
sectors 200 to 400).</li>
|
|
<li>The computer has some hardware problems, especially when
|
|
communicating with its mass storage devices.</li>
|
|
</ul>
|
|
|
|
|
|
If you suspect technical problems, try creating another version of the image
|
|
and error correction files and <a href="howtos50.html">verify
|
|
them again</a>.
|
|
When the error disappears or surfaces at a different location,
|
|
your computer may be suffering from defective memory,
|
|
broken drive cabling, or wrong CPU/system frequency settings.
|
|
<div class="talignr"><a href="qa20.html#top">↑</a></div>
|
|
|
|
|
|
<b><a name="rw">3.4 Read errors or wrong image size with -RW/+RW/-RAM media</a></b><p>
|
|
|
|
Some drives report incorrect image sizes when -RW/+RW/-RAM media are used. Two common
|
|
cases are:<p>
|
|
|
|
<table>
|
|
<tr><td class="valignt">Problem:</td>
|
|
<td>The drive reports the size of the largest image ever written to the medium, not that
|
|
of the actual image.
|
|
</td></tr>
|
|
<tr><td class="valignt">Symptoms:</td>
|
|
<td>After erasing a medium it is written with a file sized about 100MB.
|
|
But the image read back is several GB long and contains the remainings
|
|
of older images.
|
|
</td></tr>
|
|
<tr><td><pre> </pre></td><td></td></tr>
|
|
<tr><td class="valignt">Problem:</td>
|
|
<td>The drive reports the maximum possible medium capacity (typically 2295104 sectors)
|
|
instead of the number of actually used sectors.
|
|
</td></tr>
|
|
<tr><td class="valignt">Symptoms:</td>
|
|
<td>When reading beyond a certain point of the medium, only read errors occur,
|
|
but all files on the medium are still readable and complete.
|
|
</td></tr>
|
|
</table><p>
|
|
|
|
Possible remedy:<p>
|
|
|
|
<table width="100%"><tr><td class="vsep"></td><td>
|
|
Activate the option for determining the
|
|
image size from the ISO/UDF file system or from the ECC/RS02 data.
|
|
</td></tr></table><p>
|
|
|
|
If the required ISO/UDF sectors are unreadable and you are using error correction files
|
|
to recover damaged media there are two possible workarounds:
|
|
|
|
<ul>
|
|
<li>Execute the <a href="howtos50.html">"Verify"</a> function with only
|
|
the error correction file being selected/given. Note down the correct image size
|
|
from the output and restrict the
|
|
reading range accordingly.
|
|
</li>
|
|
<li>Simply read in the image with the incorrect (larger) size.
|
|
When invoking the <a href="howtos40.html#repair">"Fix"</a> function,
|
|
answer "OK" when you are asked whether the image should be truncated.
|
|
</li>
|
|
</ul>
|
|
|
|
<div class="talignr"><a href="qa20.html#top">↑</a></div>
|
|
|
|
<b><a name="dvdrom">3.5 My self-written media is recognized as "DVD-ROM" and rejected.</a></b><p>
|
|
|
|
The medium book type has probably been set to "DVD-ROM". Typically, a drive
|
|
capable of writing the same media format is required for processing the medium
|
|
with dvdisaster.<p>
|
|
|
|
For example, a two-layered DVD+R with a wrong book type
|
|
may only be accepted on a burner which can write such media.<p>
|
|
|
|
Try another drive for reading images in these cases.
|
|
|
|
<div class="talignr"><a href="qa20.html#top">↑</a></div>
|
|
|
|
|
|
<b><a name="freebsd">3.6 No drives appear under FreeBSD.</a></b><p>
|
|
|
|
<ul>
|
|
<li>FreeBSD may require a <a href="download10.html#freebsd">kernel recompile</a>
|
|
in order for ATAPI drives (nearly all current models) to become usable for
|
|
dvdisaster.
|
|
<li>You need read and write permission for the respective device
|
|
(e.g. /dev/pass0).
|
|
</ul>
|
|
|
|
<div class="talignr"><a href="qa20.html#top">↑</a></div>
|
|
|
|
|
|
<b><a name="v40error">3.7 "Ecc file has been created with version 0.40.7."</a></b><p>
|
|
|
|
The <a href="http://sourceforge.net/cvs/?group_id=157550">CVS versions</a>
|
|
of dvdisaster mark their ecc files with a special bit. This causes dvdisaster
|
|
versions upto 0.65 to falsely display the above error message. Please use the
|
|
CVS versions only together with dvdisaster 0.66 or newer versions.
|
|
|
|
<div class="talignr"><a href="qa20.html#top">↑</a></div>
|
|
|
|
|
|
<!-- do not change below -->
|
|
|
|
</td> <!-- end of page contents -->
|
|
|
|
</tr>
|
|
|
|
<!--
|
|
<tr valign="bottom">
|
|
<td style="background-color:#f0f0f0;">
|
|
<table cellpadding="10"><tr><td><a href="http://dvdisaster.net/legacy/en/index.html"><span class="fs"></span></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" style="width:100%; height:10px;"></td>
|
|
</tr>
|
|
<tr><td colspan="2" class="hsep"></td>
|
|
</tr>
|
|
<tr>
|
|
<td align="center">
|
|
<span class="fs">
|
|
<i> Copyright 2004-2012 Carsten Gnörlich.<br>
|
|
Verbatim copying and distribution of this entire article is permitted in any medium, provided this notice is preserved.
|
|
</i>
|
|
</span>
|
|
</td>
|
|
</tr>
|
|
<tr><td colspan="2" class="hsep"></td>
|
|
</tr>
|
|
</table>
|
|
</body>
|
|
</html>
|