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doc:olpcimg:english [2008/01/28 09:05]
jo
doc:olpcimg:english [2009/07/06 20:36]
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-====== OLPC image with sahana ====== 
- 
-This guide shows you how to use the sahana olpc image to create a bootable USB disk. 
- 
-===== Requirements ===== 
- 
-  * Sahana OLPC image - OLPC image with sahana. 
-  * A USB pen >= 1GB  - The minimum requirement is 1GB flash drive and it is better to have a higher capacity flash drive if you are planing to use this system for actual data collection.  
-  * dd command - You need dd command to flash the usb pen. ( You can find it in a GNU/Linux system ) 
-  * OLPC laptop - If you want you can also use a emulator. For more information on emulating see [[http://wiki.laptop.org/go/OS_images_for_emulation]]  
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-===== Creating a Dedicated USB disk ===== 
- 
-  * Download the sahana olpc image from [[http://demo.sahana.lk/tmp/olpc/]]. This image contains the sahana 0.6 stable release. 
- 
-  * Unzip the images using bzip2 command.  
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-<code>%> bunzip2 sahana_0_6_olpc_build1.img.bz2</code> 
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-  * Plug in the USB pen to your PC and unmount it. Remember you have to unmount the usb not to eject it. Type the following command in a console to do it. 
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-<code>%> sudo umount /dev/<device> </code> 
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-When you are issuing the above command change the <device> to USB pen's device file ( Ex: sdb1 or sdb2 ).  
- 
- 
-  * Next step is to flash the USB pen using the dd command. **WARNING** : By doing this you will loose all the data in the USB drive so back up data before you flash  the USB. 
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-<code> 
-%> dd if=sahana_0_6_olpc_build1.img of=/dev/sdb bs=1M 
- 
-%> sync 
-</code> 
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-  * When the light in the USB stop blinking remove the usb from the PC. 
- 
-  * For more information on how to use images with USB disks refer [[http://wiki.laptop.org/go/OS_images_for_USB_disks]] 
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-===== Booting OLPC ===== 
- 
-     * Plug the USB pen to the OLPC and turn on the machine. The olpc will detect the USB and use it's environment to boot the OLPC.  
-     * This process will not alter the internal flash memory, all the changes will be done to the environment in the USB drive.  
-     * Usually the first time boot will be bit slow because some software's need to be initialised. 
-     * Once the system is booted it will ask for a user name and a theme colour, select them according to your preference.( This happens only in first boot ) 
-     * Then you will be loged in to the suger environment. For more info on suger read [[http://wiki.laptop.org/go/Sugar]] 
-     * Now start the web browser by clicking the icon which represent a globe in the bottom menu. 
-     * The web browser will start and take you to the sahana installer. 
-     * Use the installer to install sahana 
- 
-===== Tips ===== 
- 
-     * If you need a console to configure the system press ( ALt + = ) This will open a terminal application. Also the ( Alt + Ctrl +F1 ) is available. 
-     * Click the naberhood icon to connect to a WiFi access point.  
-     * The system has a openssh server.  
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