Customizing NAND images

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This page describes how to create a jffs2 image from a laptop's internal NAND, producing an image that can be flashed onto a different XO. The laptop that is being backed up is the "host" laptop, and the laptop receiving the contents of the host laptop is the "target" laptop.

Steps:

• Make the modifications on the host laptop that you want to be present in the generated image. If you've logged into sugar and want the user to see the welcome/login prompt again, you can rm /home/olpc/.sugar/default/config.

• Insert a Windows-formatted (VFAT) USB disk into the host laptop, and reboot.

• At the "Type any key to interrupt automatic startup" key, press a key. At the "ok" prompt, type "save-nand disk:\nand.img" and press return. The contents of the NAND will be backed up to the nand.img file on the USB disk. The "ok" prompt will return when the copy has finished, and you can then power the laptop off with the power button.

• Move to the "target" laptop, and insert the USB disk. Again, interrupt at the prompt, and at the ok prompt type "copy-nand disk:\nand.img". This will copy from nand.img to the internal NAND. When back at the ok prompt, power off, remove the usb disk, and power on again to load from the new NAND image.