+ 0 Votes Yes and No Langlier 7 years ago You can certainly install it and if you dont much like vista or you have Pro SP2 compared to something like Home Basic then I could see the want to upgrade. However the big issue might be drivers for XP. Depending on the internal components and the manufacturer there may not be XP drivers for the machine. + 0 Votes No way can you install XP with Vista on your system, it will crash badly. ITT CNS Student 5 years ago No way can you install XP with Vista on your system, it will crash badly. Vista has proven to be incompatible with XP of any type. + 0 Votes So just how do I "upgrade" from Windows Vista to XP downloads Updated - 7 years ago To answer your question with another, I just bought a Dell Latitude D520 with WinVista Ultimate, and I want to get rid of this ponderous, crash-happy OS. I've got an old laptop that had XP Home edition on it. That was good enough for me. How do I "upgrade" from Vista Ultimate to XP Home Edition? + 0 Votes Sometimes can't be done lonewolftech 7 years ago I recently took a client's new HP "Slimline" and the particular machine in question had no drivers available other than Vista. Be sure that you can find the drivers first. + 0 Votes Keep both for a while danag42 Updated - 7 years ago If you install Vista after XP, you get the Vista boot loader, primitive but usable. In XP, you need to use the XP boot loader to choose which OS you want. I have one machine with Vista and XP. The purpose was to test Vista while maintaining the ability to use XP for known tasks. One interesting trick is to go into Vista, and when it gripes about not having drivers, point it at the XP drive or partition. Somehow Vista seemed satisfied with the XP drivers, even though they supposedly didn't exist. It's probably best to dual boot for a while until drivers and stability issues are resolved. Lots of Vista drivers are appearing, and like I said, you can "cheat" because Vista will grudgingly accept XP drivers if they're already installed and running the device. + 0 Votes YES.....YES......YES....... arhandoo 7 years ago You will definately be able to do it, using dual boot option makes it pretty easy to use both XP & Vista; BUT doing this will most certainly compromise Tech Support from the PC Manufacturer, which you might avail now or in the near future. If you are going to do it anyway then there is a pre-requste; the Driver CD pack should be available, if you dont have one then do request it from your PC Manufacturer. They'll provide it to you free of cost. The same goes for OS Installation Disks. + 0 Votes Absolutely! dma69593 7 years ago Yes, you can have more than one OS on your computer providing you have enough space on your hard drive and a decent amount of memory. You need to ask yourself whether you want to have both or whether you want just XP and not vista. If you decide to just have XP but later on want to change to vista you can always install Vista anyway, (presumably your new system came with a vista recovery disk). When it comes to running vista I would suggest you have at least 2-4 Gb RAM, not the measly 512mb ram some systems are selling. Personally, I prefer to use XP. Haven't heard great things about vista anyway! Regards, + 0 Votes New Partition - New OS a.powell 7 years ago Just create a new partition on the new hard drive using something like Partition Magic. Run the XP disc and you can then tell it where to load Windows XP. Edit the boot.ini file to give you the choice of OS at bootup. + 0 Votes No way can you install XP with Vista on your system, it will crash badly. ITT CNS Student 5 years ago No way can you install XP with Vista on your system, it will crash badly. Vista has proven to be incompatible with XP of any type.