Intel NUC - expected sequence of screens


After trying on an RP3, I am trying it on an Intel NUC and experiencing slightly different behaviour so I wanted to check if this is expected and documented anywhere.

On the RP3:

  • download resin image
  • flash SD card using etcher
  • insert SD card into RP3
  • power on RP3
  • RP3 boots and HDMI output is a white background with logo.
  • RP3 appears on dashboard as “online”

On the Intel NUC:

  • download resin image
  • flash USB flash key using etcher
  • insert USB flash key into NUC
  • power on NUC press F10 to select boot device as USB Flash Key
  • NUC boots, appears on dashboard as “provisioning”
  • NUC powers off
  • remove USB flash key, power NUC back on
  • HDMI output is GRUB screen appears, auto dismisses after two seconds
  • HDMI output is a white background with logo
  • If the image is a DEVELOPMENT image:
    • HDMI output is black background with boot progress text log
    • pressing enter a few times gets to

Resin OS 2.13.6 [UUID] tty1
[UUID] login:

  • Entering “root” as login and pressing enter logs in and gets a /bin/sh

So if someone has physical access to my DEVELOPMENT Intel NUC they can login as root without a password?