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Date:      Mon, 08 Feb 1999 14:15:49 -0500
From:      Matthew Hagerty <matthew@venux.net>
To:        Andre Albsmeier <andre.albsmeier@mchp.siemens.de>, Rico Pajarola <pajarola@cybertime.ch>
Cc:        freebsd-stable@FreeBSD.ORG, Andre Albsmeier <andre.albsmeier@mchp.siemens.de>
Subject:   Re: Fully Dedicated HD may clobber some BIOS'
Message-ID:  <4.1.19990208141224.009b16a0@mail.venux.net>
In-Reply-To: <19990208065559.A16209@internal>
References:  <3.0.32.19990207170425.0092c9e0@shrike.overmind.ch> <3.0.32.19990207170425.0092c9e0@shrike.overmind.ch>

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You can add Intel Server Boards to that list, and yes, they have a Phoenix
BIOS.  If the BIOS does not recognize the MBR it seems to write its own MBR
that basically stops the machine from booting and just displays an error.
I had quite a time with this, what a pain in the a**.

Matthew

At 06:55 AM 2/8/99 +0100, Andre Albsmeier wrote:
>On Sun, 07-Feb-1999 at 17:04:30 +0100, Rico Pajarola wrote:
>> At 14:54 99.02.07 +0100, Andre Albsmeier wrote:
>> >Just to add it for reference: Machines from our company (Siemens) also
don't
>> >work with dangerously dedicated disks :-( They have a thing called Phoenix
>> >BIOS and I have got plenty of them...
>> >
>> >Interesting, all these "well known" names (Compaq, HP, Siemens) seem to
have
>> >problems with it...
>> Most of these well known names have their own, 'improved' BIOS. They do
>> more sanity checks on everything, which in some rare cases can make life
>> easier and 'safer', but in most cases they are a nuisance. There are other
>> ways to get problems with a Compaq BIOS than DD, eg a brand new
>> unpartitioned disk :( there are ways around those problems, but it can be a
>> real nuisance even if you're just installing win95 (as if win95 alone
>> wasn't enough of a nuisance)
>> So if it doesn't work, it's not because DD is a bad (or wrong) thing, but
>
>No, DD isn't a bad thing. I prefer it over NDD because it's simpler.
>
>> the BIOS checks for something it just should not check (ie it should only
>> look at the signature on the master boot record, and if it is ok, it should
>> load it without any further tests).
>> Those 'well known' names should fix their broken BIOSes, as they've always
>> caused problems with non-dos (=fat16) OSes (yes, even win95b with fat32 was
>> a problem with some vendors BIOS).
>
>I hope not because this is the reason I need for buying other machines :-).
>You can trust me, it's hard to buy non-Siemens PCs if you are working at 
>Siemens...
>
>> You've been warned that DD may not work for you, and no one foces you to
>> use it. You know which BIOSes are likely not to work with it, and there
>> actually are cases where it can make one's life easier :)
>
>_I_ know that it doesn't work with machines from above companies, and _I_
>know what to do against it (_I_ don't use them). I just wanted to add
>another name to the list in case someone needs it in future.
>
>> 
>> Sorry if this was a bit too loud, but I just don't want to see DD go away.
>
>So do I.
>
>	-Andre
>
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