Mailing List Archive: memdisk and floppy controllers

Hi,

just tried memdisk - it works, even with token-ring network cards!

I've some problems with dos 6.22 on one machine, though. This one
doesn't have a floppy controller (e.g. linux reports that it didn't
find any controller). The Dos 6.22 boot disk is loaded, then the boot
sector is started and tells me that it can't load the system
(German message: 'Kein System oder Laufwerksfehler', don't know
the english one from the boot sector).

On a different system (this one has a floppy controller!) it works.

With a different bootdisk (Win98) both work, too.

Both systems tell me:
[..]
INT 13 08 failure
old: int13 = nnnn int15 = mmmm
new: int13 = oooo int15 = pppp
[further messages from boot sector and dos]

Maybe it's also a bios issue, since the controllerless machine is only
used for Netbsd (Network Station Manager), Linux and OS/2 (Workspace
on Demand), it's an IBM Networkstation 2800 with token-ring on board.

Any further ideas? Do Win98 and Dos 6.22 do anything different in the
dos area?

Regards,

Josef

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Josef Siemes wrote:

> Hi,
>
> just tried memdisk - it works, even with token-ring network cards!
>
> I've some problems with dos 6.22 on one machine, though. This one
> doesn't have a floppy controller (e.g. linux reports that it didn't
> find any controller). The Dos 6.22 boot disk is loaded, then the boot
> sector is started and tells me that it can't load the system
> (German message: 'Kein System oder Laufwerksfehler', don't know
> the english one from the boot sector).
>
> On a different system (this one has a floppy controller!) it works.
>
> With a different bootdisk (Win98) both work, too.
>
> Both systems tell me:
> [..]
> INT 13 08 failure
> old: int13 = nnnn int15 = mmmm
> new: int13 = oooo int15 = pppp
> [further messages from boot sector and dos]
>
> Maybe it's also a bios issue, since the controllerless machine is only
> used for Netbsd (Network Station Manager), Linux and OS/2 (Workspace
> on Demand), it's an IBM Networkstation 2800 with token-ring on board.
>
> Any further ideas? Do Win98 and Dos 6.22 do anything different in the
> dos area?
>

Odds are that the BIOS of the floppy-controllerless machine gets really
confused and breaks when it appears that suddenly it has a floppy drive.
INT 13 08 is the "get number of drives." It's quite possible Win98
(DOS 7.1) does something slightly different and doesn't trigger the same
bug.

-hpa