[coreboot] SeaBIOS does not always recognize the USB key as boot device

[Paul Menzel]

Dear Matthias,


Am Mittwoch, den 05.08.2015, 21:03 +0200 schrieb Matthias Apitz:

> I have some (yes, some) Acer C720 Chromebooks which are "rooted" to
> enter SeaBIOS to boot any OS from USB or SSD. This works fine, in
> general.
> 
> I have one particular USB key, which says on attach to a FreeBSD 
> system about itself:
> 
> Aug  5 20:55:13 c720-r276659 kernel: da0: Flash Transcend 8GB 8.07> Removable Direct Access SCSI-4 device 
> Aug  5 20:55:13 c720-r276659 kernel: da0: Serial Number KWUQE9E8
> Aug  5 20:55:13 c720-r276659 kernel: da0: 40.000MB/s transfers
> Aug  5 20:55:13 c720-r276659 kernel: da0: 7487MB (15335422 512 byte sectors: 255H 63S/T 954C)
> Aug  5 20:55:13 c720-r276659 kernel: da0: quirks=0x12
> Aug  5 20:55:13 c720-r276659 kernel: GEOM: da0: the secondary GPT header is not in the last LBA.
> Aug  5 20:55:13 c720-r276659 kernel: GEOM: diskid/DISK-KWUQE9E8: the secondary GPT header is not in the last LBA.
> 
> This one (and only this one in all my C720) on power-on is not 
> reliable detected as boot device. A press on ESC only offers the 
> internal SSD to boot from. If it is detected (in 1 of 10 power 
> cycles), it boots fine.
> 
> What can I do, apart of trashing the USB key?

give more information, so when the SeaBIOS developers look into it,
they have what they need.

Please publish the commit hash you build SeaBIOS from and the config
file.

Additionally, build SeaBIOS with debug level 8 and publish the logs
from a working and non-working boot. If you build SeaBIOS with CBMEM
console support, you’ll find the logs in the output of `cbmem -c`.


Thanks,

Paul
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