Mail Archives: opendos/2001/02/24/00:36:00
----- Original Message -----
From: "Bernie" <bernie AT mbox302 DOT swipnet DOT se>
To: <opendos AT delorie DOT com>
Sent: Thursday, February 15, 2001 11:46 PM
Subject: Re: prob audio CD on 2nd CD-ROM with NWCDEX
> IMHO that's a very stupid thing to do. Since you don't change
drives often
> it's rather easy to into the BIOS and let it get the correct
settings for
> you and then you use those. (choose "Autodetect Hardrives" or
something
> like it).
All the autodetect hard drive does is reads the drives' CHS and
other info that goes into the entry area for hard drives. This
does not addect the settings for the primary, secondary, master,
slave. I believe this is the area he was speaking of. And auto in
that area is not always the best setting.
> Ahem, Linux ignores the BIOS.
Not exactly. The BIOS is used for the boot process, but once the
kernel is loaded the BIOS is no longer used. Basically Linux does
ignore the BIOS, but it still can cause boot problems. Linux
itself does it's own probing for hardware. Much the same as NT
does. It is during this probing process where problems with
hardware can accur. (As well as the BIOS used when booting the
system.)
Here is an interesting note: When I am in DOS and boot to Linux
from DOS, if I have the sound blaster mic not muted, it will not
be muted in Linux. this is because you are warm booting. In
WINDOZE, I have it muted in the volume control panel. Another
thing you have to careful of when warm booting into another OS is
to be sure and flush your HD cache if it is set to delayed writes.
Some caches will detect a three fingure salute, but probably will
not detect warm booting into another OS. Smart Drive may be an
exception to this when warm booting from DOS to WINDOZE and
WINDOZE does shut down before entering DOS mode.
>
> >At present, here in California, it is hard to find an AT board
>
> First now? It's been impossible for over a year and a half
here - if not more.
There are several AT boards still available. They are getting a
little harder to find, but they are out there. You can also look
in the used market for them. Also look for what they call BAT
boards. These will work in AT or ATX cases and have both power
connectors.
> IMHO:
> New boards are coming out with 133MHZ Bus (Intel) and now moving
to 200 and
> 266 MHZ Bus (AMD), with UDMA66 (Intel) and UDMA100 (AMD) as the
slowest IDE
> controller speed.
Yes they are, but who needs this for a DOS box. Why not just find
some older technology real cheap.
> BTW: I've never even heard of a 166MHz bus.
I don't know if this is a standard or not, but some motherboards
may have this capability. I have never heard of 112Mhz and 124MHz
FSB, but I have seen questions about these speeds, which probably
means that someone played with various jumper settings and found
them to be available. Since 166 is double 83, it would not seem
unreasonable.
> > Also,
> >almost all of the new boards for the last three years have 2
EIDE
> >connectors and 1 SCSI connector (capable of connecting 16
devices).
>
> SCSI on the motherboard? That's very rare here. I remember
seeing some
> before IDE-2/EIDE (take your pick on what to call it) was
common, but that
> was on 486s.
This has become very common. These boards use the 80 pin SCSI
connectors. They have been around for quite awhile. I think I have
seen some with SCSI RAID controllers on them.
Pat
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