Maykef
Posts: 38
Joined: Sun Mar 08, 2015 9:07 pm

Problems with rpiboot after mounting external sd card

Sun Oct 14, 2018 12:01 pm

Hi all,

I cannot flash the CM3 using ./rpiboot after mounting an sd card and moving boot files to it. Rpiboot never recognises the CM.

Any ideas how to solve this?

Thanks

aBUGSworstnightmare
Posts: 1073
Joined: Tue Jun 30, 2015 1:35 pm

Re: Problems with rpiboot after mounting external sd card

Sun Oct 14, 2018 1:28 pm

As you want to use rpoboot I assume you have a CM3 (with eMMC) and not CM3L (without eMMC).

On the CMIO the uSD can only be used with CM3L.

Maykef
Posts: 38
Joined: Sun Mar 08, 2015 9:07 pm

Re: Problems with rpiboot after mounting external sd card

Sun Oct 14, 2018 1:58 pm

aBUGSworstnightmare wrote:
Sun Oct 14, 2018 1:28 pm
As you want to use rpoboot I assume you have a CM3 (with eMMC) and not CM3L (without eMMC).

On the CMIO the uSD can only be used with CM3L.
You assume well.

Problem appeared after I moved boot files to external sd card in order to avoid problems when installing larger file systems like opencv.

Tried in Linux and Mac OS, but I just cannot flash it. Waiting for BCM2835/6/7 gets stuck and does nothing.

aBUGSworstnightmare
Posts: 1073
Joined: Tue Jun 30, 2015 1:35 pm

Re: Problems with rpiboot after mounting external sd card

Sun Oct 14, 2018 2:06 pm

If you need more flash than 4GB you may want to use the NEC CM3 which has 16GB eMMC storage mounted.
Or use uSD with a CM3L.

Maykef
Posts: 38
Joined: Sun Mar 08, 2015 9:07 pm

Re: Problems with rpiboot after mounting external sd card

Sun Oct 14, 2018 2:09 pm

aBUGSworstnightmare wrote:
Sun Oct 14, 2018 2:06 pm
If you need more flash than 4GB you may want to use the NEC CM3 which has 16GB eMMC storage mounted.
Or use uSD with a CM3L.
Thanks for the advice on the CM NEC edition.

That doesn't solve my present problem though.

hippy
Posts: 3896
Joined: Fri Sep 09, 2011 10:34 pm
Location: UK

Re: Problems with rpiboot after mounting external sd card

Sun Oct 14, 2018 3:00 pm

Maykef wrote:
Sun Oct 14, 2018 12:01 pm
Any ideas how to solve this?
Delete or rename "bootcode.bin" on the SD Card.

Or perhaps remove the SD Card, power-up then insert the card -- I have no idea how safe hot-insertion is.

When "bootcode.bin" is present the Pi will try to boot from the SD Card before trying other means of booting so never gets to a state where rpiboot sees it again as something it can upload to.

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