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From: Vincent Coen (2:221/10)
To: All
Date: Tue, 14.12.21 15:02
How to diagnose failure to boot from USB?
From: Vincent Coen <>

Hello Chris!

Monday December 13 2021 21:22, you wrote to All:

On a 3B+ I have a HDD in a 825? casing along with the daughter board.
I followed the instructions to install the O/S via a SD card (I think) using
specific software then REMOVED the SD card and rebooted.

Since then no problems.

I do not use two USB drives so suggest you try one at a time without the SD
card present.

The software build the image onto a HDD and partitions it but you do not seem
to having any control of the partitions, sizing etc - it just does it.


> I have written a Pi image to a little (spinning) USB drive I have and
> have connected it to my Pi 4. It's the same image as I recently
> installed on a new SD card.

> I have gone through the various update checks for the eeprom and
> related things (I think, I've followed a couple of web sites
> descriptions).

> I have changed the BOOT_ORDER entry in the eeprom using
> rpi-eeprom-config to 0x41 which should try USB first and then the SD
> card.

> ... and it doesn't boot from USB, it thinks for a fairly long time and
> then boots from the SD card (fortunately since the Pi is rather
> inacessible out in the garage).

> If I manually mount the USB drive it appears to have the correct
> partitions and types with all the usual files etc.

> The system does have two USB drives, is there any logic to which it
> will try to boot from? (The drive with the boot image is /dev/sda so
> is the 'first' USB drive)

> Any ideas gratefully received.

> --
> Chris Green
> ·


* Origin: - the fidonet nntp junction (2:221/10)


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