From: "Michal H. Tyc" 

Constant Brouerius van Nidek wrote:
> Grub starts as expected but when I choose Drdos it gives following 
> information:
> rootnoverifi (hd1,0)
> chainloader (hd0,0)+1

I'm not very familiar with GRUB, but in its manual the sequence of 
commands to boot DOS from the first partition on the first hard disk is 
a bit different:

rootnoverify (hd0,0)
makeactive
chainloader +1

Can you enter the above commands interactively instead of selecting the 
"DR-DOS" menu option and see what happens then?

> Cannot load DOS! Any key to retry.

This message comes from the DR-DOS boot sector. It cannot find 
IBMBIO.COM in the root directory or an error occurs while reading this file.

> Did fdisk /mbr but this fdisk does not react to /mbr.

Indeed, there is no such command line option in DR-DOS FDISK, you have 
to select it from the menu.

> Get the normal fdisk menu with as choice number 5 write mbr new or something 
> like that. Using this choice it says it has rewritten the mbr but my grub 
> starts as usual and the choice in grub still gives the same answers.
> Did a sys a: c: which went okay. An it is sure the first partition of the 
> first drive where drdos is positioned.

Strange... Maybe there is some kind of hard disk numbering problem? Did 
you try booting from a real floppy, not from CD, when doing SYS?

Michal


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