Windows 7 Win 7 & Vista dual boot problem.


New Member
Recently shrunk my Vista partition on my laptop to created a new partition for a Win 7 install. All is working great, able to choose either partition on start up with no problems.

Now here's where my problems lie:

I want to get rid of my original Vista partition (C:) and add the free space to my Win 7 partition (D:), however when I set my Win 7 partition (D:) to active in Win 7 disk management and reboot I get a NTLDR error. I must then load the gpart cd and set my Vista partition as boot to be able to either OSs, again.

Let me know if there's any other info you may need, I'll be sitting here desperately hiting the reload button every 30 sec.

Any help will be greatly apprciated.

Hello and Welcome to The Windows 7 forums,

Check control Panel > Administrative Tools, Computer Management , click Disk management and see what partition is labeled as System, boot, active, crash dump

What is the size of Your C: drive at the moment?
Thanks for the quick reply!

Sorry got my partitions backwards:

C: (win 7) 29 GB 7 free - boot, pagefile, crash dump & primary partition
D: (Vista) 84 GB 37 free - System, active, primary partition

Also not sure how these drive letter got reversed, C: was the original partition of vista
Boot up with the Windows 7 DVD as you would during installation, but click on Repair your Computer in the lower left hand corner and choose Startup Repair. Usually setup will detect you have an error before you even click on Startup Repair and automatically fix it for you.
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You may need to do it twice. You should then find you can remove the vista OS.

You could also download and use the free program "EasyBcd" and rewrite the bootmanage/MBR, after selecting Windows 7 as your default OS.