[coreboot] [SeaBIOS] usb boot issue

Marshall Buschman mbuschman at lucidmachines.com
Fri Oct 14 18:00:39 CEST 2011

On 10/14/2011 10:49 AM, Wolfgang Kamp - datakamp wrote:
> Hi Kevin,
> the problem occurs when I try to boot from USB Stick on AMD DBFT1 Persimmon board.
> I have tried a couple of sticks in different USB slots but it is always the same issue.
> If Ubuntu has booted from HD the stick will be recognized correctly.
> The log is attached. Tell me if you need more information.
In testing on the ASRock E350M1 (also SB800-based), I am not able to 
correctly access USB disks under linux.
Reads fail and the USB disk device disappears and reappears. The time 
before failure appears to be random, although the most data I've been 
able to read from the device (using a simple file copy) is 500MB. I do 
not believe failure will occur unless you attempt to read data from the 
USB disk.

You said you're able to boot from the hard drive, and then read from the 
USB disk correctly.
It would be interesting to know if once booted, you can read significant 
quantities of data reliably.

I am guessing you will not be able to, and that whatever bug causes this 
is also responsible for the USB boot issue.
> Regards
> Wolfgang
> -----Ursprüngliche Nachricht-----
> Von: Kevin O'Connor [mailto:kevin at koconnor.net]
> Gesendet: Freitag, 14. Oktober 2011 01:15
> An: Wolfgang Kamp - datakamp
> Cc: coreboot at coreboot.org; seabios at seabios.org
> Betreff: Re: [SeaBIOS] usb boot issue
> On Thu, Oct 13, 2011 at 03:56:48PM +0200, Wolfgang Kamp - datakamp wrote:
>> Hi,
>> is there any solution for the usb boot issue of the AMD SB800 Persimmon platform
>> with SeaBIOS 1.6.3 and actual Coreboot version?
> I'm unfamiliar with the issue.  Can you post the SeaBIOS debug output
> along with a description of the issue you are seeing?
> -Kevin

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