How does Jetson Xavier NX mount a module’s system to a SSD and boot from it?
Moving your question to the Jetson Xavier NX category.
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
if you want to use nvme ssd as rootfs only, you can use follow method
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
Can you use nx as an example to complete this command?
$ 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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