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Date:      Tue, 7 Mar 95 22:14:07 CST
From:      "David Kelly" <dkelly@iquest.com>
To:        "Javier Martin Rueda" <jmrueda@diatel.upm.es>, questions@FreeBSD.org
Subject:   Re: System hangs when changing root device
Message-ID:  <dkelly.1145023687K@mail.iquest.com>

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>As I said several days ago:
>
>> I created a boot disk with rawrite (using the "newer" bootdisk from FreeBSD
>> 2.0-RELEASE) and everything was probed OK, but after the message "changing
>> root device to fd0c" appeared, the computer freezed.
>
>This is just to say that I changed the motherboard from a PCI+VESA with UMC
>chipset to a PCI+VESA with Opti chipset, and things started to work.
>
>However, then the network card (SMC EtherPower 8432BT PCI) did not work.
>This was solved by changing the IRQ from 9 to 11. The computer also has
>a serial port in IRQ2, and that must be conflicting with IRQ9.
>
>Maybe the problem with the old motherboard was also due to some IRQ
>conflict, although everything seemed to be probed OK. I must say that I
>have a VESA motherboard with UMC chipset at home and it works fine with
>FreeBSD 2.0R.
>
>Just FYI...

IRQ2 is IRQ9 on every PC clone since the AT. IRQ2 is used to cascade the
upper 8 IRQ's.

--
David Kelly N4HHE,   n4hhe@amsat.org,    dkelly@iquest.com
----------------------------------------------------------------------
The human mind ordinarily operates at only ten percent of its capacity
-- the rest is overhead for the operating system.



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