Booting from USB on RPI3

[Jonathan Chen]

On Fri, 24 Apr 2020 at 04:22, bob prohaska <fbsd at www.zefox.net> wrote:
[...]
> Consoles: EFI console
>     Reading loader env vars from /efi/freebsd/loader.env
> Setting currdev to disk1p1:
> FreeBSD/arm64 EFI loader, Revision 1.1
> (Thu Apr 16 06:59:37 UTC 2020 root at releng1.nyi.freebsd.org)
>
>    Command line arguments: loader.efi
>    Image base: 0x39e91000
>    EFI version: 2.80
>    EFI Firmware: Das U-Boot (rev 8217.4096)
>    Console: comconsole (0)
>    Load Path: /efi\boot\bootaa64.efi
>    Load Device: /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/UsbClass(0x0,0x0,0x9,0x0,0x0)/UsbClass(0x424,0x9514,0x9,0x0,0x2)/UsbClass(0x2109,0x2811,0x9,0x0,0x1)/UsbClass(0x13fd,0x1040,0x0,0x0,0x0)/HD(1,0x01,0,0x81f,0x18fa8)
> Trying ESP: /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/UsbClass(0x0,0x0,0x9,0x0,0x0)/UsbClass(0x424,0x9514,0x9,0x0,0x2)/UsbClass(0x2109,0x2811,0x9,0x0,0x1)/UsbClass(0x13fd,0x1040,0x0,0x0,0x0)/HD(1,0x01,0,0x81f,0x18fa8)
> Setting currdev to disk1p1:
> Trying: /VenHw(e61d73b9-a384-4acc-aeab-82e828f3628b)/UsbClass(0x0,0x0,0x9,0x0,0x0)/UsbClass(0x424,0x9514,0x9,0x0,0x2)/UsbClass(0x2109,0x2811,0x9,0x0,0x1)/UsbClass(0x13fd,0x1040,0x0,0x0,0x0)/HD(2,0x01,0,0x197c7,0x4a6bb39)
> Setting currdev to disk1p2:
> Loading /boot/defaults/loader.conf
> Loading /boot/device.hints
> Loading /boot/loader.conf
> Loading /boot/loader.conf.local
> Loading kernel...

You've set rootdev=disk1p1: , but your kernel appears to be on
disk1p2: You should double-check this and make sure you're booting off
the correct partition.

> /boot/kernel/kernel text=0x9b804c data=0x192958 data=0x0+0x3a21fe syms=[0x8+0x10f740+0x8+0x134f85]
> Loading configured modules...
> /boot/kernel/umodem.ko text=0x2100 text=0x1390 data=0x6e0+0x10 syms=[0x8+0xf48+0x8+0xb6e]
> can't find '/boot/entropy'
>

It looks like your kernel has loaded, but it can't find the
file-system. This is usually due to unusual content in /etc/fstab. You
have to use symbolic names (eg: /dev/gpt/some-gpt-label) instead of
/dev/da* names. Can you show the contents of "gpart show -l" of your
USB disk, and /etc/fstab ?

Cheers.
-- 
Jonathan Chen <jonc at chen.org.nz>