I installed new windows 7 to drive C on my pc. Before i installed this i was using windows vista which was installed on a different drive (which is now called drive D) Drive D is a SATA drive whereas the current windows op system is installed on an IDE drive (Drive C). I ran window repair off the win 7 cd. it found the old vista on drive d and has now added it to the boot thing. So now when i boot up it gives me option to choose op systems e.g win 7 or win vista. I want to totally remove/delete the vista currently installed on drive D. Simply right clicking and selecting delete does not work due to some permission issue. I have even tried to change ownership to my current admin account with no luck there. Looking at the disk managment screen i notice i have two active partitions drive c and drive d. drive d is also flagged as system partition. I want to remove the 'active' and 'system' flag from drive D and have it as a standard primary partition. So how is this done best. NOTE I have over 20GB of data on DRIVE D which I would not want to lose so formatting the partition is not an option. The solution i hope to find is one where i can do it direct through windows 7 without having to boot up in dos mode or safe mode etc... Maybe someone knows of a software which can do all this for free?

See this thread. Windows 7 News!

no mine was on a different drive. BUt heres how i sorted it: In BIOS (Press F2 during startup) i set my current windows 7 hard drive as the 1st harddrive and set this as the preferred boot device. I then found windows would not load up because boot manager was missing - it was obviously on Drive D - hence the reasons Drive D was flagged with a 'system' flag. and thats why i could not format it. So i booted from the windows 7 dvd and clicked the repair button. It found both operating systems then restored them both and restarted. I then rebooted again from the dvd. This time i selected the windows 7 OS from the list and then selected the repair option. It found that the boot manager was missing and repaired it! I then rebooted from hard drive (drive C:_ and it worked. I had to select windows 7 from the dual boot options screen I then formatted drive D: The moved all the files back into it. Done. I hope.....

Insofar as you are good, that's great! Windows 7 News!

You will have to delete the D drive partition or reformat the D drive in whole. To do this, simple click on "Start", and right click on "Computer", select "manage". In the left hand navigational pane, click on "Disk Management", find the drive / partition with Windows Vista installed and right click on it. If Windows Vista was installed on a separate partition but the same hard drive as Windows 7 you will want to select "Delete Volume" and then extend Windows 7 into the now unallocated space. If Windows Vista was installed on a separate hard drive, simply select "Format." Windows Vista will now be removed from the computer. Should you require additional assistance and / or feedback Microsoft does have an official Windows 7 Support Forum located here http://tinyurl.com/9fhdl5 . It is supported by product specialists as well as engineers and support teams. Jessica Microsoft Windows Client Team