boot/install Win from non-hd0,0 using GRUB

[umidori kamome]

Hey Yo Hoh, everyone!

I have been searching for quite some time now and also
asked
for help on other mailing-lists (because I thought this
here
was for bugs only - it isnt really, is it?!).
Please, could somebody tell me, wether it is possible to
boot
off a cdrom with GRUB?
Here is what I had (without any success so far) written on

debian-user:

I need some help here - I messed up my whole
partition-table trying to install dos (to be followed by
win)
yesterday.
Gladly i was able to recover the table with GNUparted
(rescue).
Now i am trying to install win98 on either (hd0,3) (the
only fat-partition, so i wont need hiding) or on, well hdd
under linux.
I also have two cdroms (as hdb, hdc) - does that make hdd
(hd3) or (hd1)? (are the cdroms counted as hd?).

My preferred solution would be:

 - faking (hd0,3) as (hd0,0) or (hd1/3?) as (hd0) using
"map"
and then booting from the win-install-cd.
Can i boot from a cdrom with grub (how)?
maybe something like:
  map (hd0) (hd1) #or hd3?
  map (hd1) (hd0)
  chainloader "cdrom?"+1

 - or can i make a win98 boot-floppy without an installed
sys?
And then do the same mapping like above plus:
  chainloader (fd0)+1

and is there a difference between "map (0x80) (0x81)" and
                                  "map (hd0) (hd1)"    ?



I have been searching for quite some time now and also
asked
for help on other mailing-lists (because I thought this
here
was for bugs only - it isnt really, is it?!).
Please

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