How does Jetson Xavier NX mount a module's system to a SSD and boot from it?

Robotics & Edge Computing Jetson & Embedded Systems Jetson Xavier NX
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How does Jetson Xavier NX mount a module’s system to a SSD and boot from it?

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Moving your question to the Jetson Xavier NX category.

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There is a M.2 slot on Xavier NX developer kit. You may consider to buy a NVMe PCIe M.2 SSD card and move the rootfs to it.

After Jetpack 4.6, please check developer guide

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if you want to use nvme ssd as rootfs only, you can use follow method

(GitHub - jetsonhacks/rootOnNVMe: Switch the rootfs to a NVMe SSD on the Jetson Xavier NX and Jetson AGX Xavier)

if you want use nvme ssd as a boot device, you could use l4t_initrd_flash.sh in xxx/Linux_for_Tegra/tools/kernel_flash/initrd_flash.sh

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Usage: ./l4t_initrd_flash.sh [ --external-device -c -S ] <rootfs_dir>

Can you use nx as an example to complete this command?

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$ sudo ./tools/kernel_flash/l4t_initrd_flash.sh --no-flash --external-only -c \ ./tools/kernel_flash/flash_l4t_nvme.xml -S 230GiB --external-device nvme0n1 jetson-xavier-nx-devkit-emmc nvme0n1p1

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