Re: Booting from usb hard disk

On Tue, March 24, 2009 05:49, Robert Noland wrote:
> On Mon, 2009-03-23 at 19:40 -0300, Nenhum_de_Nos wrote:
>> On Mon, March 23, 2009 07:36, Robert Noland wrote:
>> > So I have my i386 install on a usb hard disk, which I can only boot on
>> > one machine now.  The one machine that I can make work has a bios
>> option
>> > that reads "BIOS ehci handoff".  This used to work with the old usb
>> > stack.  The machines that it doesn't work on, boot the kernel, but
>> fail
>> > to mount root, giving me the forbidding mountroot> prompt, which is
>> > immediately followed by the message saying that da0 is attached.  da0
>> is
>> > however not listed in the available boot devices list.  I tried
>> playing
>> > around with the timeout in vfs_mount.c, but that didn't seem to have
>> any
>> > impact.  It has been suggested that this may be a "geom" timeout, but
>> I
>> > don't know anything about the boot system really.
>>
>> I had problem a while ago with via mini itx hardware, that was quite
>> close. If I try boot from usb (installed in usb hdd), I get to the point
>> of loader not finding my disk.
>>
>> I then used a small flash disk attached to the ata (44 pin ide) channel
>> and formatted /boot in there. this way I get to the point of mount root
>> you said, and da0 not being alive soon enough to mount root. list disks
>> also couldn't find da0 though.
>>
>> I tried current from that time, and no good.
>>
>> if this is solved, I'll be happy to try whatever patch to current. (as
>> long as I can install it from another box/or its ata channel, as it
>> can't
>> boot vanilla 7.1R)
>
> So, my solution was to set kern.cam.scsi_delay=10000
> in /boot/loader.conf

with this set, it doesn't even detects the usb disk, just the controller :(

thanks,

matheus

> You can hit 6 from the boot menu and set it manually the first time.
>
> robert.
>
>> matheus
>>
>
> --
> Robert Noland <rnoland_at_FreeBSD.org>
> FreeBSD
>


-- 
We will call you cygnus,
The God of balance you shall be