4 gigs of ram in vista ultimate

i just recently built a pc and i put in 2 sticks of 2gig ram, and i installed windows vista, vista is saying i have 3.25 gigs of ram installed, y does it say this, and also i was going to install xp on my machine, but it wouldn't install, is this because of two much ram.

 

you need to use vista x64 to use 4gigs or more. standard vista will stop at 3gigs or so.

 

In response to your second question, what error are you getting when trying to install XP?

 

it just tells me disk error, but if i put the windows vista disk it it works fine, if i put the xp in another comptuer auto start comes up right away so i know the disk works, someone told me it won't install becasue of the 4 gigs

 

the 4gigs wouldn't matter. it would act like vista, and only see 3gigs, give or take.

i think the proper way to dual boot xp and vista is to have xp installed first, and then install vista on a second partition.

to be safe, practice on a spare hard drive, so you don't lose anything important.

 

would it be possible for me to dual boot even though i already have vista installed, i would like to have xp installed also

 

so if i take out 2 gigs of ram and leave the 2 gigs of ram in, xp should be able to install right? and then after i install it put the other 2 gigs of ram back into.