Help with disk config please!

[pioneer2000]

Can someone explain how I can delete drive D? For some bizarre reason it's marked as a system drive when Windows has only ever been installed on C, i.e. disk 1.

WTF has happened here? Why isn't C the active system partition anymore?

 

[SiriusB]

It would seem you had your D drive set as boot and installed Windows 7 to C:. Meaning Windows put the boot information on the D: partition.

There is a tool, bcdboot that can sort this out.

Open a command prompt with Administrator rights and use the command:

bcdboot c:\windows /s c:[/SIZE][/FONT]

I would suggest backing up anything important before using this, just in case

Remember to change your boot order in the BIOS after you run the command.