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Once power is applied to the target, the U-Boot bootloader will be fetched from the NAND flash and executed. Boot messages will be printed out to the serial console. Redundant U-Boot environment is stored in the NAND flash as well, as depicted in the following image.
[[File:Xub-nor.png|thumb|center|600px|NOR partition table]]<gallery>[[File:Xub-norNand SDVx.png|600pxthumb|NOR SDVXFile:Nand SDVx.pngcenter|600px|NAND SDVx Nand partition table]]</gallery>By default, U-Boot is configured to retrieve Linux kernel image stored in the microSD card. In turn, Linux kernel shall mount the correct root file system from the microSD card depending on the version of the board one is using. For the '''lite''' version, the root file system is stored in the <code>mmcblk0p2</code> partition, while the '''ul''' uses the <code>mmcblk0p3</code> partition. At the end of the boot process, Linux shell shall be available on the serial console.
The following dump shows the typical messages printed out to the console during the bootstrap process.
