There are eSata Express Card devices that can add eSata ports to a laptop.
An external hard drive with eSata might work for installing Windows onto
through the eSata port.
As others have stated, USB or firewire connections would not work.
"PW" <paulremove_williamson858@xxxxxx> wrote in message
news:jmo4241bs64crrc1hfmvhopc4muog49egs@xxxxxx
Quote:
> Hi,
>
> I am curious if Vista can be run from one of those portable external
> hard drives that I see in Staples, etc... rather than have to install
> another internal hard drive. I want to dual-boot with XP (already
> installed on an internal HD) and it would also be great if I can bring
> that external HD with us when we travel and hook it up to my wife's XP
> laptop and be able to boot up in Vista too. We need something for
> testing our software in Vista.
>
> Thanks!
>
> -paulw