# Modify U-Boot change boot sequence of TX2-NX?

**URL:** <https://forums.developer.nvidia.com/t/modify-u-boot-change-boot-sequence-of-tx2-nx/204744>\
**Category:** Jetson TX2\
**Tags:** boot\
**Created:** [March 1, 2022, 9:10am UTC](https://forums.developer.nvidia.com/t/modify-u-boot-change-boot-sequence-of-tx2-nx/204744 "2022-03-01T09:10:53Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![ndy83107](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@ndy83107](https://forums.developer.nvidia.com/u/ndy83107)\
**Post date:** [March 1, 2022, 9:10am UTC](https://forums.developer.nvidia.com/t/modify-u-boot-change-boot-sequence-of-tx2-nx/204744/1 "2022-03-01T09:10:53Z")

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Hi, everyone,  
I want to change the booting order of tx2-nx by modifying uboot code,I follow ““[How to modify U-Boot source code to change boot order of TX2-NX?](https://forums.developer.nvidia.com/t/how-to-modify-u-boot-source-code-to-change-boot-order-of-tx2-nx/202683)”” but device still boot on emmc .can someone tell me how to modify that? THANKS!

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**Author:** ![WayneWWW](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/waynewww/32/14043_2.png) [@WayneWWW](https://forums.developer.nvidia.com/u/WayneWWW)\
**Post date:** [March 1, 2022, 9:53am UTC](https://forums.developer.nvidia.com/t/modify-u-boot-change-boot-sequence-of-tx2-nx/204744/2 "2022-03-01T09:53:16Z")

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Please also try to change with u-boot/include/configs/p3636-0001.h.

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**Author:** ![ndy83107](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@ndy83107](https://forums.developer.nvidia.com/u/ndy83107)\
**Post date:** [March 2, 2022, 1:44am UTC](https://forums.developer.nvidia.com/t/modify-u-boot-change-boot-sequence-of-tx2-nx/204744/3 "2022-03-02T01:44:40Z")

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Hi,WayneWWW Thanks for your reply,  
I change boot sequence in u-boot/include/configs/p3636-0001.h.  
It can root on nvme. but usb can not.  
I can change anything to root on usb?  
THANKS!

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<div class="post-metadata">

**Author:** ![WayneWWW](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/waynewww/32/14043_2.png) [@WayneWWW](https://forums.developer.nvidia.com/u/WayneWWW)\
**Post date:** [March 2, 2022, 1:56am UTC](https://forums.developer.nvidia.com/t/modify-u-boot-change-boot-sequence-of-tx2-nx/204744/4 "2022-03-02T01:56:38Z")

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Hi,

Just to confirm

1. Changing p3636-0001.h can change the boot order, right?

2. Only usb boot fails, is it correct?  
Actually, TX2 is not able to boot from usb. That is why the developer guide does not have it in the support cases.

 ![image](https://global.discourse-cdn.com/nvidia/original/3X/f/5/f5148f77b1d5149cbb7a23edb2a171dc822a0fb4.png)

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<div class="post-metadata">

**Author:** ![ndy83107](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@ndy83107](https://forums.developer.nvidia.com/u/ndy83107)\
**Post date:** [March 2, 2022, 5:44am UTC](https://forums.developer.nvidia.com/t/modify-u-boot-change-boot-sequence-of-tx2-nx/204744/5 "2022-03-02T05:44:42Z")

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Hi,  
Changing p3636-0001.h can change the boot order,Only USB device boot fail  
Thanks for your assistance

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**Author:** ![system](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/system/32/68080_2.png) [@system](https://forums.developer.nvidia.com/u/system)\
**Post date:** [March 16, 2022, 5:45am UTC](https://forums.developer.nvidia.com/t/modify-u-boot-change-boot-sequence-of-tx2-nx/204744/6 "2022-03-16T05:45:22Z")

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