Hey, I've recently ran into problems after installing Vista. To cut a long story short, my old hard drive with Windows XP had been dying for a while so I decided to replace it and run a clean install of Windows Vista on the new drive at the same time. Plugging in both hard drives, and setting the new one to slave, I ran the ISO from the XP hard drive using daemon tools and installed. It worked fine until I attempted to disconnect the old hard drive with Windows XP on it and set the new one as the master drive. When that happened, the Vista Boot Loader screen did not show up on booting, despite the drive it was contained in being in the BIOS acknowledged as the primary master drive and it being assigned as drive C:. Instead I receive the error: NTLDR is missing Press CTRL + ALT + DEL to restart Can anyone help to solve this problem? I have since plugged back in the hard drive and can run both XP and Vista for troubleshooting. Any help would be appreciated. Thankyou.

I think because of the way you have installed it, it requires your old drive to boot into either OS. Why not burn the ISO to DVD, make your new drive the Master and install from the DVD at bootup.

See if this may help you NTLDR is missing or Microsoft " If at first you don't succeed, Please Post Back "

You should not be surprised, the master boot record (MBR) is always on the system drive drive in a "Master/Slave" HDD setting, regardless of where you path your dual OS installations. Now that you've learnt the lesson the hard way, all you need to do to fix this is to copy ntldr, ntdetect.com from your older drive to the newer one and run FixBoot & FixMBR.