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<div style="text-align: left;">First of all it is important to detect which device is our microSD Card. In order to do that we can follow this instructions in a Linux terminal:</div>
<div style="text-align: left; padding-left: 30px;">'''1-''' Clean the ''dmesg'' information:</div>
sudo dmesg -c<div style="text-align: left; padding-left: 30px;">'''2-''' Insert the microSD Card and show the ''dmesg'' information:</div> dmesg<div style="text-align: left;">The result have to be similar to this:</div>[[File:SD1_.png]]
dmesgThe result have to be similar to this: [[File:dev.png]] <div style="text-align: left;">We can see the name of our device in the system: '''/dev/sdX''' where X is the character assigned by our system, in this case /dev/sdsdc'''e.'''</div>
<div style="text-align: left;">Now we have to ensure that the MicroSD Card is completely clean. We can use the following command to do that:</div>
sudo dd if=/dev/zero of=/dev/sdX bs=1024 count=1024<div style="text-align: left;">Where '''X''' is the character returned previously by your system, for example, in the previous situation:</div> sudo dd if=/dev/zero of=/dev/sde sdc bs=1024 count=1024Before use anyway of partition one good practise is unmount the dev where is inserted the SD. -> <div style="text-align: left;"code>umount /dev/sdx</code> Now we are ready to create the corresponding partitions in our MicroSD Card.</div>
==How to partition the MicroSD card==
<span class="mw-headline">It is important to difference between a MicroSD Card for a NXP processor and the other cases. The process of partition is similar but, in the case of NXP chips, there exists some differences. </span>
==='''<span class="mw-headline">General case processUsing Gparted:</span>'''===
{| class="contenttable sortable"
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!|
====='''GENERAL CASE'''=====
!|
====='''NXP PROCESSORS'''=====
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||'''1- '''Select the corresponding device
==='''Using SFDISK& MKFS<br />'''===
Another method is to use the following commands in order to prepare the microSD card. These commands will perform the same operations that in the previous part.
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sudo sfdisk /dev/<strong><your_microsd></strong> <<EOF<br>label: dos<br>63,144522,0x0C,*<br>160650,,,-<br>EOF
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sudo sfdisk /dev/<strong><your_microsd></strong> <<EOF<br>label: dos<br>16065,128520,0x0C,*<br>144585,,,-<br>EOF
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sudo mkfs.vfat -F32 /dev/<strong><your_microsd></strong> -n boot
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sudo mkfs.vfat -F32 /dev/<strong><your_microsd></strong> -n boot
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sudo mkfs.ext4 /dev/<strong><your_microsd></strong> -L rootfs
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sudo mkfs.ext4 /dev/<strong><your_microsd></strong> -L rootfs
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| style="width: 431.367px;"|'''For example:'''
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sudo sfdisk /dev/<strong>sdc</strong> <<EOF<br data-attributes="%20/">label: dos<br data-attributes="%20/">63,144522,0x0C,*<br data-attributes="%20/">160650,,,-<br data-attributes="%20/">EOF<br><br>sudo mkfs.vfat -F32 /dev/<strong>sdcsdc1</strong> -n boot<br data-attributes="%20/"><br data-attributes="%20/">sudo mkfs.ext4 /dev/<strong>sdcsdc2</strong> -L rootfs<br><br>
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sudo sfdisk /dev/<strong>sdc</strong> <<EOF<br data-attributes="%20/">label: dos<br data-attributes="%20/">16065,128520,0x0C,*<br data-attributes="%20/">144585,,,-<br data-attributes="%20/">EOF<br><br>sudo mkfs.vfat -F32 /dev/<strong>sdcsdc1</strong> -n boot<br><br>sudo mkfs.ext4 /dev/<strong>sdcsdc2</strong> -L rootfs<br><br>
|}
='''How to copy everything into the MicroSD Card<br />'''=
* Copy MLO and u-boot.img to primary into the ''root folder'' of the '''boot partition'''
<pre>cp <<strong>your_MLO<[your_u-boot_directory]/strong>> u.boot.img /media/<your_user>user/boot<br> cp <<strong>[your_u-boot.img<boot_directory]/strong>> MLO /media/<your_user>user/boot
</pre>
You can follow this post [[How to prepare a bootable MicroSD CardThe bootloader U-Boot|linkU-boot Bootloader]] if you want build the MLO and u-boot
* Copy u-boot.imx using dd before primary partition in raw mode as
<pre>sudo dd ifsudo dd if=<<strong>/[your_u-boot_directory]/u-boot.imx</strong>> of=/dev/<your_microSD> [your_sd] bs=512 seek=2</pre>You can follow this post [[The bootloader U-Boot|U-boot Bootloader]] you want build the u-boot.imx '''How to prepare configure Uenv<br />''' It is need to indicate how start the boot. For this reason it will be created a file called uenv.txt with the correct configuration. We present two examples of help to start the system from the MicroSD Card or from an nfs server. * If we want boot from the bootable MicroSD microSD Card|link. [http://downloads.isee.biz/pub/relaunch/uenv.txt uenv.txt]* If we want boot from nfs server. [http://downloads.isee.biz/pub/relaunch/uenv_nfs.txt uenv.txt] These two examples have an ip address assigned to them that can be modified as you want build . ==Kernel==Kernel files, '''zImage '''and''' .dtb''', can be copied into the'' root folder'' of the u-''' bootpartition''' '''Kernel Modules''' have to be copied using the command indicated in the kernel compilation [[Linux Kernel 4.imx9.y|post]] into the '''rootfs partition'''.
==Root file System==
The root file system have to be extracted into the'' root folder'' of the '''rootfs''' ''' partition'''.Where can be [http://labs.isee.biz/index.php/IGEP_Firmware_set-up downloaded here.]
