You need a third party boot manager.
"Kev" <Kev@discussions.microsoft.com> wrote in message
news:EAEC9EC0-2D0F-4DBD-B19D-32FF96886306@microsoft.com...
> So ho do i make vista 'not see' the second hard drive, and for that matter
> not let XP see my vista drive?
>
> -kev
>
> "Paul Randall" wrote:
>
>>
>> "Kev" <Kev@discussions.microsoft.com> wrote in message
>> news:52398BDE-49A6-4A12-BBEC-5F101A2173E8@microsoft.com...
>> > Hi,
>> > I am a keen gamer and although i love vista the compatability problems
>> > mean
>> > that i may need to set up dual boot.
>> >
>> > I have Vista home premium 64bit on my C drive right now.
>> >
>> > I plan to get another drive, get XP 64bit, instal it on that hard drive
>> > and
>> > have a dual boot sytem to allow me to play games i can't play right
>> > now.
>> >
>> > I have tried reading up but most of the info talks about dual boots
>> > with
>> > XP
>> > first or on partitions rather than seperate hard drives and talks about
>> > having to repair vista.
>> >
>> > So my question is: how would i set up my pc to have Vista on one drive
>> > and
>> > XP on the other and essentialy just have a start up menu to choose
>> > which
>> > one
>> > i want to use on that login?
>> >
>> > My logic states just instal on seperate hard drives and all things will
>> > be
>> > fine, but reading up it seems not the case, so basicaly HELP! 
)
>> >
>> > Any advice or help would be appreciated
>>
>> I haven't tried this, but perhaps it would work.
>> With only one drive connected, install Vista. After doing your typical
>> setup configuration of first boot-up as a user, shutdown and connect the
>> second drive. On startup, as soon as you have control, remove the drive
>> letter from the second drive, so your Vista only sees the drive it is
>> installed on. Install WXP on the second drive, using a similar
>> procedure.
>> Each time at boot up, hit the function key that allows selecting which
>> drive
>> to boot from.
>>
>> I'd be interested in hearing if this actually works and keeps the systems
>> separate so that both system's recovery stores work.
>>
>> -Paul Randall
>>
>>
>>