Jetson Xavier Run on Usb Drive

Can i use my jetson xavier on external usb drive ? I see that on youtube jetsonhacks channel can use usb drive on jetson nano

Please refer to this:

Since there is M.2 Key M slot on Xavier, you may also consider to use NVMe SSD card.

thanks for the answer
“1. Connect the external device to host Linux PC”
can you tell me the external device means xavier or the external usb drive ? and if you can explain the steps for me i will be pleased.

i try to follow the steps where is this :" cd rootfs/" file ?

  1. External device means the usb drive.

  2. Rootfs is under the Linux_for_Tegra which is installed by sdkmanager.