dual boot : fed1 and fed2 no go

[john brennan-sardou]

hello,  
    I try to be a cautious guy so before installing fedora 2 on test and 
killing off fed 1 I decided to put it on my second disk and have a dual 
boot. Well, I got grubbed. No surprise I suppose. Here is the grub.conf
#boot=/dev/hda
default=1
timeout=10
splashimage=(hd1,0)/grub/splash.xpm.gz
title Fedora Core (2.6.5-1.358)
    root (hd1,0)
    kernel /vmlinuz-2.6.5-1.358 ro root=LABEL=/1 rhgb quiet
    initrd /initrd-2.6.5-1.358.img
title fedcore
    rootnoverify (hd0,0)
    chainloader +1
When I boot into the old fed core one this is the message :
  "  Error 13 Invalid or unsupported executable format "
The name fedcore as you  can see is the first primary disk and fed 2 is 
on the second. I know I should be reading the forty-five page doc on my 
desk but I would feel better disposed to grub if I could get out of this 
quick.My first disk is full of work material.  I have already tried the 
LBA bios change on the mail list but  no joy. Thanks a lot John 
Brennan-Sardou