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→Preparing the bootable microSD card
==Preparing the bootable microSD card==
The starting point is the default bootable microSD card associated with the release 2.0.0 of the [[DESK-MX8M-L |DESK-MX8M-L kit]]. The card partition scheme has to be modified in order to create a partition that will be used to store the Debian root file system. In the following example, this partition was created using the unused space. This partition is mounted at <code>/media/user/debian/</code> when the card is inserted into the host's reader. After downloading the Armbian image on the host, the contents of the Debian root file system are extracted and copied to this partition. To calculate the offset to mount the partition of the Armbian image, multiply the start address (532480 in the example) by 512.
<pre class="workstation-terminal">
$ unzx Armbian_22.11.1_Uefi-arm64_bullseye_current_5.15.80_minimal.img.xz
The last step before booting Orca SBC target is to change the U-Boot environment so that the Linux kernel uses the <code>/dev/mmcblk1p3</code> partition for mounting the root file system.
==Bootstrap process==
If the target is set up properly, the botting process will looks like this: