wow, i almost had it, but managed to mess it up.
the version Computer Guru suggested in the reply above worked! (for a minute!) I was able to boot into XP, and both of my vista partions were completely hidden from xp! the problem came however when I tried to boot back into vista: I got velcroface's exact "autochk program not found" problem. perhaps I didn't do the unhide option right? I'm now stuck in a no man's land between xp and vista: I can't boot (or recover using the install cds) vista OR xp. I think i'm going to nuke the entire thing and start over from scratch.
PLEASE NOTE: I figured out PART of what was wrong above: the tutorial was a little unclear about what the BOOT PARTITION was. in my example, I put this code:
chainloader (hd0,1)/ntldr
however, it wouldn't work that way. I had to use:
chainloader (hd0,0)/ntldr
I'm going to do this all over from the start and get it right, but now I have a question about the original article (
http://neosmart.net/blog/2007/hide-vista-partition-from-xp/) regarding this section:
# Optional section
# If you include this section, you will see a second bootloader menu!
title Boot XP - Unhide Vista
unhide (hd0,1) # SET THIS TO THE VISTA DRIVE
# Optionally repeat the above entry for all the Vista drives
chainloader (hd0,0)/ntldr # SET THIS TO THE BOOT PARTITION
boot
I'm not sure I understand the unhide option: when unhiding vista, I want it to boot into vista, not into XP! because, if I'm understanding this correctly, this second "optional" section will boot me into xp, with vista unhidden, and therefore overwrite my vista system restore points, which was the whole point of hiding vista from xp in the first place!
what I really want is two options:
1. boot into xp with vista hidden
2. unhide the vista partitions and boot into vista
how do I set it up so that I have these two options? or do I need to go in and some how unhide the vista partitions every time after I boot into xp, before booting vista?
thanks in advance for your help. I think I'm going to take a day or too off from this project, I've worn my pointer finger out from hitting "reset" so many times! and one final thought: even though I actually used to work at microsoft, i'm ashamed of them that they haven't come up with a good dual boot xp/vista solution. if I were a business owner instead of an enthusiast, there'd be no way I would make the switch to vista until this were 100% ironed out.