<?php # dvdisaster: English homepage translation # Copyright (C) 2004-2009 Carsten Gnörlich # # UTF-8 trigger: äöüà # # 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"); require("../include/screenshot.php"); begin_page(); $way=$_GET["way"]; if($way & 1) $make_iso_action=$way&2; else $make_iso_action=$way|1; if($way & 2) $write_iso_action=$way&1; else $write_iso_action=$way|2; ?> <!--- Insert actual page content below ---> <?php howto_headline("Augmenting images with error correction data", "Walkthrough", "images/create-icon.png"); ?> dvdisaster is specialized in working with error correction data and reading of defective media. Creating ISO or UDF images and writing them to a medium is a totally different business, and also bears high complexity. We do not want to re-invent medium writing in dvdisaster. Instead we continue using the CD/DVD/BD writing software which you have got when purchasing your drive.<p> <pre> </pre> <a name="a"></a> <table> <tr> <td width="200px" align="center"> <?php echo "<a href=\"howtos33.php?way=$make_iso_action\">\n"; ?> <img src="thumbnails/make-iso1.png" border="0"> <br><img src="../images/down-arrow.png" border="0"></a></td> <td> </td> <td valign="top"><b>First create an ISO image</b> using your CD/DVD/BD writing software. Select the files you want to write to medium, but do not start the writing process yet. Instead, create an ISO image on your hard disk. Click on the image to the left to see a <?php echo "<a href=\"howtos33.php?way=$make_iso_action\">\n"; echo "detailed walk-thorugh</a>.\n"; ?> </td> </tr> </table> <?php if($way&1) { ?> <hr> <b>Detailed example: Creating an ISO image on hard disk</b>. Since there are many different media writing programs available we are demonstrating the required steps by using the popular GNU/Linux software <i>K3b</i> as an example. If you are using a different software you should be able to figure out the required actions from the descriptions below. <p> <hr> <?php begin_screen_shot("Start new project","make-iso1.png"); ?> <b>Begin a new project.</b> First open your media writing application. Many programs expect you to start a new project. Within the project you will then make the selections for the new medium. <p> Using K3b: <i>Begin a new project by clicking into the highlighted field ("New Data CD project") in the main window.</i> <?php end_screen_shot(); ?> <hr> <?php begin_screen_shot("File selection","make-iso2.png"); ?> <b>Select the files to be written on the medium.</b> Typically there is a file selection dialog from which you can select files or drag them into the project.<p> Using K3b: <i>Choose the required files in the upper half of the window. In the example the files <i>backup.tar.gz</i>, <i>win.zip</i> and <i>work.tar.gz</i> have been selected for writing onto CD. The currently selected files are shown in the lower window half.</i><p> <b>Important:</b> Do not completely fill the medium. Make sure to keep at least 20% of the medium space for the error correction data.<p> Using K3b: <i> The currently used medium space is shown in the green bar at the bottom of the window (558,9 MB).</i> <?php end_screen_shot(); ?> <hr> <?php begin_screen_shot("Configuring the writing software","make-iso2.png"); ?> <b>Configuring the writing software.</b> The software will let you choose the writing target before the actual writing process is invoked. Do <b>not</b> select the CD/DVD/BD writing drive here, but configure the creation of an ISO/UDF image on hard disk as described below.<p> <b>Hint:</b> Remove all media from the drives before proceeding to make sure that you do not inadvertently start the writing process.<p> Using K3b: <i>Open the writing dialog tab by clicking on the "Burn" button near to the left edge of the window.</i> <?php end_screen_shot(); ?> <?php begin_screen_shot("Selecting image creation","make-iso3.png"); ?> <b>Selecting image writing.</b> Most writing programs will simply let you click an option for creating the ISO image on hard disk. If your program seems to be missing this option you might have to select an "image recorder" instead of the actual CD burner.<p> Using K3b: <i>Select the "Writing" tab". Activate the "Only create image" option (marked in green).</i> <?php end_screen_shot(); ?> <?php begin_screen_shot("Image file selection","make-iso4.png"); ?> <b>Select image file and type.</b> Select the target directory, name and type for the image file. Use image files of type ".iso" or ".udf" only! Other image formats like ".nrg" are not supported by dvdisaster; processing such image files with dvdisaster will render them unusable without further notice or error messages.<p> Using K3b: <i>Choose the "Image" tab. Enter the target directory for the file (the example file "medium.iso" will be put into the sub directory "/var/tmp/cg"). K3b will always create .iso images so there are no choices to be made for the image type.</i> <?php end_screen_shot(); ?> <hr> <table> <tr> <td width="200px" align="center"> <img src="../images/down-arrow.png" border="0"></td> <td> </td> <td valign="top"></td> </tr> </table> <?php } /* end from if($way&1) above */ ?> <a name="b"></a> <table> <tr> <td width="200px" align="center"> <img src="../images/good-image.png" border="0"> <br><img src="../images/down-arrow.png" border="0"></a></td> <td> </td> <td valign="top">When you have prepared the image <b>switch over to dvdisaster</b>. Make sure that it has been configured as described in the <a href="howtos32.php">basic settings</a>. </td> </tr> </table> <table> <tr> <td width="200px" align="center"> <a href="howtosa2.php"> <img src="../images/select-image2.png" border="0"> <br><img src="../images/down-arrow.png" border="0"></a></td> <td> </td> <td valign="top"><b>Select the directory and file name</b> of the ISO image which you have just created.</td> </tr> </table> <table> <tr> <td width="200px" align="center"> <a href="howtosa4.php"> <img src="images/create-icon.png" border="0"> <br><img src="../images/down-arrow.png" border="0"></a></td> <td> </td> <td valign="top"><b>Augment the image with error correction data</b> by clicking on the "Create" button.</td> </tr> </table> <?php begin_howto_shot("Creating error correction data.","make-ecc1.png", "down-arrow.png"); ?> <b>Please wait while the error correction data is created.</b> This may take a while depending on the image size and the available free space on the medium. Processing a DVD image with about 20-30% free space should take about 5-10 minutes on recent hardware. <?php end_howto_shot(); ?> <?php begin_howto_shot("Comparing image sizes.","make-ecc2.png", "down-arrow.png"); ?> <b>Please note:</b> dvdisaster does not create a new image, but will rather augment the existing one. Look at the image in the file manager before and after processing it with dvdisaster and note how its size increases. <?php end_howto_shot(); ?> <a name="c"></a> <table> <tr> <td width="200px" align="center"> <?php echo "<a href=\"howtos33.php?way=$write_iso_action\">\n"; ?> <img src="thumbnails/write-iso1.png" border="0"></a></td> <td> </td> <td valign="top"><b>Write the augmented ISO image</b> on the medium. Select the augmented image in your writing software and start the writing process. Click on the screen shot to the left for <?php echo "<a href=\"howtos33.php?way=$write_iso_action\">\n"; echo "a detailed example</a>.\n"; ?> </td> </tr> </table> <?php if($way&2) { ?> <table> <tr> <td width="200px" align="center"> <img src="../images/down-arrow.png" border="0"></td> <td> </td> <td valign="top"></td> </tr> </table> <hr> <b>Detailed example: Writing the ISO image on the medium</b>.<p> <?php begin_screen_shot("Select image writing","write-iso1.png"); ?> <b>Select writing of the image.</b> Now open your media writing software again. Invoke the mode for writing pre-existing .iso images on the medium.<p> Using K3b: <i>Click on the highlighted field ("Burn CD image") in the main window.</i> <?php end_screen_shot(); ?> <hr> <?php begin_screen_shot("Image selection","write-iso2.png"); ?> <b>Image selection.</b> Select the image you have just created and augmented with dvdisaster. <p> Using K3b: <i>Use the field marked in green to select the image file or enter its name directly.</i> <?php end_screen_shot(); ?> <?php begin_screen_shot("More settings","write-iso2.png"); ?> <b>More settings.</b> Select the "DAO" ("disk at once") writing mode if supported by your drive. This improves the compatibility between the medium and the error correction. In addition this prevents you from accidentally adding more sessions to the disc which would destroy the error correction data. <p> Using K3b: <i>Choose "DAO" in the field marked yellow.</i> <?php end_screen_shot(); ?> <?php begin_screen_shot("Writing the medium","write-iso3.png"); ?> <b>Writing the medium.</b> Now start the writing process. <p> Using K3b: <i>Click on the "Start" button in the window from the previous screen shot.</i> <?php end_screen_shot(); ?> <hr> <?php } /* end from if($way$2) above */ ?> <table> <tr> <td width="200px" align="center"> <img src="../images/down-arrow.png" border="0"></td> <td> </td> <td valign="top"></td> </tr> </table> <table> <tr> <td width="200px" align="center"> <img src="../images/good-cd-ecc.png" border="0"></td> <td> </td> <td valign="top"><b>Finished!</b> You have now created a CD which is protected by error correction code.</td> </tr> </table> <pre> </pre> <b>Related information</b> <ul> <li><a href="howtos90.php">Check whether the writing process has affected the error correction data.</a><p> It is recommended to perform this test once every time you change to a new version (or vendor) of your media writing software to make sure that it interoperates well with dvdisaster. </li> </ul> <!--- do not change below ---> <?php # end_page() adds the footer line and closes the HTML properly. end_page(); ?>