Failure to boot with stock kernel when build from source

[DaveYYY]

Sorry that I missed this.
Please follow this post to update the initrd for RT kernel, or the driver for NVMe will fail to load because the version of the driver does not match with the kernel image:

JP 6 Flash Issue NVME

YES. We have identified the root cause of this issue. The issue is that for JetPack 5, NVMe and USB drivers are integrated into NVIDIA’s downstream kernel, and built directly into the kernel image; for JetPack 6, in order to be compatible with upstream kernel, a lot of drivers are pulled out of kernel source, and built as kernel modules. Therefore, initrd must contain these drivers for NVMe/USB to be mounted as rootfs during booting, but initrd does not get updated during kernel building/flas…