Used To Run Vista, Installed XP. Can't Dual-Boot. Help?

By Spiiriitus
Jul 10, 2009
  1. Alright heres the deal. I used to run vista ultimate 64-bit on my desktop. i made a partition and installed xp on it. now when i boot i get an error that says i have no boot.ini file (yes i know what that file is) and it automatically boots my xp. now i was wondering how i could make it so i can choose which to boot. im PRETTY sure it has to do with editing the boot.ini file but i have NO idea what to put in it to make it realize i have to OS'. Any help would be GREATLY appreciated :]
  2. Rick

    Rick TechSpot Staff Posts: 4,572   +65

    I don't believe you can dual boot Vista with XP's boot loader (boot.ini). However, you should be able to dual boot it by using the Windows Vista boot loader. You'll need to setup Vista's boot loader again.,

    I glanced over this and it looks like the information you are looking for. You can run the bcdedit command from the command prompt by booting up from your Vista install disc.

  3. Spiiriitus

    Spiiriitus TS Rookie Topic Starter

    i tried doing this but when i launch the bootsect.exe it says its not a valid windows32 program. I forgot to mention my XP is 32-bit and my partitioned vista is 64 bit...
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