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<head><title></title>
<META NAME="AUTHOR" CONTENT="Main.MitchBradley"/><META NAME="COPYRIGHT" CONTENT=""/><META NAME="DOCNUMBER" CONTENT="r1.19 - 04 Sep 2008"/><META NAME="GENERATOR" CONTENT="TWiki TWiki-4.2.0, Tue, 22 Jan 2008, build 16278"/><META NAME="KEYWORDS" CONTENT=""/><META NAME="SUBJECT" CONTENT=""/></head>
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<title>XO</title>
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<p />
<div id="index">
<div class="topics">
<ul><li class="heading">INTRODUCTION</li><li><a href="XO_Introduction.html">INTRODUCTION</a></li><li><a href="XO_AboutOLPC.html">ABOUT OLPC</a></li><li><a href="XO_HowToVolunteer.html">HOW TO VOLUNTEER</a></li><li class="heading">GETTING STARTED</li><li><a href="XO_GettingStarted.html">GETTING STARTED</a></li><li><a href="XO_OpeningTheXO.html">OPENING THE XO</a></li><li><a href="XO_Ports.html">PORTS</a></li><li><a href="XO_AdvancedPower.html">POWERING OF YOUR LAPTOP</a></li><li><a href="XO_Starting.html">STARTING THE XO</a></li><li><a href="XO_Keyboard.html">KEYBOARD</a></li><li class="heading">INTERFACE</li><li><a href="Sugar_Interface.html">ABOUT THE USER INTERFACE</a></li><li><a href="Sugar_HomeView.html">HOME VIEW</a></li><li><a href="Sugar_ActivityView.html">ACTIVITY VIEW</a></li><li><a href="Sugar_NeighbourhoodView.html">NEIGHBOURHOOD VIEW</a></li><li><a href="Sugar_GroupView.html">GROUP VIEW</a></li><li><a href="Sugar_TheFrame.html">THE FRAME</a></li><li><a href="Sugar_TheJournal.html">THE JOURNAL</a></li><li class="heading">ACTIVITIES</li><li><a href="Sugar_WhatIsAnActivity.html">WHAT IS AN ACTIVITY</a></li><li><a href="Sugar_LaunchingActivities.html">LAUNCHING ACTIVITIES</a></li><li><a href="Sugar_Collaborating.html">COLLABORATING</a></li><li><a href="Sugar_SwitichingActivities.html">SWITCHING ACTIVITIES</a></li><li><a href="Sugar_ExitingActivities.html">EXITING ACTIVITIES</a></li><li><a href="Sugar_InstallingActivities.html">INSTALLING ACTIVITIES</a></li><li><a href="Sugar_FindingActivities.html">ACTIVITY SAMPLER</a></li><li><a href="XO_AboutNetworksAndTheInternet.html">INTRODUCTION</a></li><li><a href="Sugar_ConnectingNetwork.html">CONNECTING</a></li><li><a href="XO_GiveMeTheInternet.html">GIVE ME THE INTERNET</a></li><li><a href="XO_ExternalHardware.html">NETWORKING HARDWARE</a></li><li><a href="XO_RouterTable.html">WIRELESS DEVICES</a></li><li class="heading">MAINTENANCE</li><li><a href="Sugar_BackingUp.html">BACKING UP</a></li><li><a href="Sugar_ConservingDiskspace.html">CONSERVING DISKSPACE</a></li><li><a href="XO_ChargingBattery.html">CHARGING </a></li><li><a href="XO_CaringForXO.html">CARING FOR YOUR XO</a></li><li><a href="XO_HowToFlash.html">HOW TO REFLASH</a></li><li><a href="XO_Repairing.html">REPAIRING</a></li><li><a href="XO_Troubleshooting.html">TROUBLESHOOTING</a></li><li><a href="XO_Maintenance.html">MAINTENANCE</a></li><li><a href="XO_ReplacingBattery.html">REPLACING</a></li><li><a href="XO_GettingSupport.html">GETTING SUPPORT</a></li><li class="heading">APPENDICES</li><li><a href="XO_KeyboardShortcuts.html">KEYBOARD SHORTCUTS</a></li><li><a href="XO_HardwareSpecifications.html">HARDWARE SPECIFICATIONS</a></li><li><a href="Sugar_Glossary.html">GLOSSARY</a></li><li><a href="Sugar_Credits.html">CREDITS</a></li><li><a href="XO_Credits.html">CREDITS</a></li><li><a href="Main_Credits.html">CREDITS</a></li></ul>
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<div id="content">
<h1>Resetting to Factory Defaults
</h1>
<p><strong>Warning: EVERYTHING on your XO will be deleted if you use a USB storage device and the following method to reflash your XO's flash memory</strong>.
</p>
<p>With Internet connectivity, you can prepare yourself to reflash (restore) an XO to its factory-default settings. This procedure is called a "clean-install" and is described in more detail at <a title="Clean Install" href="http://wiki.laptop.org/go/Clean-install_procedure">http://wiki.laptop.org/go/Clean-install_procedure</a>. (Software updates can be delivered by clean-installing or by other means.)
<br />
</p>
<p>Clean-installing works by completely reformatting your XO with a software image stored on a USB storage device.
</p>
<h2>Before you begin
</h2>
<p>You will need:
<br />
</p>
<ul>
<li>A USB storage device that has at least 1 GB of space free </li>
<li>A computer with fast Internet access (this should allow you to download the required 300-400MB within about an hour)</li>
</ul>You will then load two special downloaded files onto your USB storage device. After that, the reflashing process takes about ten minutes.
<h2>Preparing your USB Storage Device
<br />
</h2>
<ol>
<li> Download the OS image and its 'fs.zip' file to your local computer. These are compressed files, so DO NOT open them — instead, in your browser, visit the following two pages and follow their instructions:
<br />
<ul>
<li><a href="http://download.laptop.org/xo-1/custom/g1g1/releases/8.2-latest/os-image.html" class="external free" title="OS Image" rel="nofollow">http://download.laptop.org/xo-1/custom/g1g1/releases/8.2-latest/os-image.html</a></li>
<li><a title="Signatures File" href="http://download.laptop.org/xo-1/custom/g1g1/releases/8.2-latest/fs-zip.html">http://download.laptop.org/xo-1/custom/g1g1/releases/8.2-latest/fs-zip.html</a></li>
</ul> </li>
<li> Copy the resulting files onto your clean (FAT or FAT32-formatted, not quick-formatted) USB storage device.
<ul>
<li> Your USB storage device should now contain exactly two files named something like: <tt>en<em>xxx</em>-<em>n</em>.img</tt> and <tt>fs.zip</tt>. (On some operating systems, the '.img' and '.zip' extentions may be hidden.)</li>
<li>These files should occupy a total of at least 300 MB of space.</li>
</ul> </li>
<li> Unmount the USB storage device and disconnect it from your computer when it is safe to do so.</li>
</ol>
<p>You have now prepared yourself to restore the factory-default settings which are current at this time.
</p>
<h2>Reinstalling your XO's Operating System
<br />
</h2>
<ol>
<li>Turn off your XO.</li>
<li>Connect your prepared USB storage device to your XO.</li>
<li><img alt="Power_button.jpg" src="./OLPC_simple/HowToFlash/Power_button.jpg" width="168" align="right" height="114" />Next, hold down all four gamepad keys above the power button, and then push the power button to turn the XO on. You will see a message that tells you to "Release the game key to continue". Do not continue until you see this message.
<br /></li>
<li>Release the gamepad keys. The reflash process runs automatically; first you will see the XO arrange and color in a grid of boxes, then the XO will display "Rebooting in 10 seconds..." The XO will then restart with a clean image. </li>
<li>Enter your name for your XO and then click Next.
<br /></li>
<li>Click the XO icon to change the colors and then click Done.
<br /></li>
<li>Optionally, connect your XO to the Internet, then use the Control Panel to download the latest Activities.
<br /></li>
</ol>
<ol>
</ol>
<h3>If something goes wrong
</h3>
<p>If you see a "Bad hash at eblock #0" message while reflashing your XO, then it means the image you copied to the USB storage device is corrupt. You should repeat the preparation steps, perhaps with a different USB storage device, and then retry the reinstallation step.
</p>
<p>
</p>
<h2>Advanced: Changing the XO's Operating System
<br />
</h2>
<p>After you become comfortable with the procedure for restoring your XO to its factory-default settings, you might decide to change, upgrade, downgrade, or altogether replace your XO's operating system. There are several ways to accomplish this goal, all of which are discussed at <a title="http://wiki.laptop.org/go/Change_your_OS" href="http://wiki.laptop.org/go/Change_your_OS">http://wiki.laptop.org/go/Change_your_OS</a>. Some of these mechanisms (such as olpc-update and others) may be more bandwidth-efficient and easily undoable.
<br />
</p>
<p>
</p>
<p />
<p />
<br>
Author : <i>HowToFlash</i> <br/>© Anne Gentle 2008<br/>Modifications:<br/>adam hyde 2008<br/>Brian Jordan 2008<br/>A Holt 2008<br/>Michael Stone 2008<br/>Mitch Bradley 2008<br/><hr/><br>License : General Public License
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