A slower secondary controller is only true on old motherboards. They used to
put the primary on the PCI bus and the secondary on the ISA bus. This is not
the case anymore. The only thing one needs to look at now is to avoid
putting a slow CD-ROM drive on the same channel as a faster harddrive as it
can effect the preformance of the drive.

Chris Hayes
ETC Computers

----- Original Message -----
From: Casema Internet <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, November 11, 1999 9:07 AM
Subject: Re: [PCBUILD] DOS COMPATIBILITY MODE


> As a rule it is not a good idea to connect a cd rom to the primary
> controller i think it would be better to connect the cd-rom to the
> (somewhat slower) secondary controller either as a master or a slave
> (might need some experimenting) sometimes (dos) cd-rom drivers (maybe
> also other device drivers) installed in the autoexec.bat and
> config.sys can cause windows to go to DOS Compatibility mode but as
> far as i know if a cd-rom driver is present in either of those files
> windows will come up with a error message something in the line of
> can't find a device....etc at startup.
>
> Kees Kouwen.
>
>
>   ----- Original Message -----
>   From: Marshall Freedland
>   Sent: Wednesday, November 10, 1999 3:28 AM
>   Subject: Re: [PCBUILD] DOS COMPATIBILITY MODE
>
>
>   "Marc E. Mosher" wrote:
>
>   >   What happens is the CD-ROM stops working and when we check the
> SYSTEM applet
>   > in the control panel it says the system has been put into DOS
>   > COMPATIBILITY MODE.
>
>   I had/have a similar problem and people tell me that it's because I
> have 4
>   devices: 3 HDs and a CD.  I daisy-chained my Primary to the CD (they
> 'live' next
>   to each other and it seemed easiest to go that way) and I had the
> other 2 Maxtor
>   HDs daisy-chained connecting to the mb.  This worked well for a
> while but...  I
>   am in DOS Compatibility Mode now.
>
>   Ideas and help sincerely welcomed.
>
>   --/\/\arshall
>
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