i have a acer laptop,it's RUNS vista home,i deciced to put on WINXP because of wireless problems.
It has 1 hhd partitioned ,as c:/--- and a partition as data.
So i installed the winxp on the data drive.
When doing this i noticed the acer vista hidden drive.
Anyway to acess the hidden drive in times of trouble you press alt+F10,BUT WINXP still loads.by the way the vista c:/ drive won't load i can't ACCESS it,so i put in another partition in windows boot up,then the vista drive showed up in dual boot but didn't load screen went grey.
bios says enable disc recovery then rebbot,but winxp load only.
how do i get to the vista backup drive,or the vista c:/ drive.

Thanks for any help as it's a present now i've buggered it.
TinfedIt was probably a VERY bad IDEA to do this. So you have destroyed the Acer backup partition to reinstall VISTA and you have messed up the boot loading sequence. The oldest Windows should always be loaded first, but since you have no Vista DVD (I presume) then you will now be unable to remedy this.

I would contact ACER pronto. Actually the recovery partition is still intact so is the vista c:/.i just nned to fix the mbr.
The drive is partition 3 times vista about 40gig ,data about 32 where i installed winxp it was clean,and a 17 gig PARTITON for the recovery vista.
So they are there just have to get rid of winxp to acess them.See the below site.

http://support.acer-euro.com/empowering_technology/utility2.html