Posts: 10
Joined: Fri Jan 12, 2018 4:38 pm

Hardware Switch to allow booting from USB stick instead of eMMC

Fri Jan 12, 2018 4:48 pm

Hi all,

I'm using the Compute Module 3 with eMMC Flash and the IO Board v3.

I'm trying to configure it in a way where it boots from eMMC by default but if a push switch is held during boot it will boot from a USB stick. Essentially providing a way to "factory" reset the software, ie boot a tiny kernel (noobs etc) and reflash the eMMC.

I've read various posts on here about this but I'm still struggling to get this to work and i'm not at a loss to what I'm doing wrong.

So the two questions are: Is this possible and if so what do I need to do to enable it?
For reference if i do an otp_dump I get: 17:3220000a


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