Hi there Janty_,
Do you have other partitions on the drive? What happens when you try to install OS? Do you have anything stored on the drive?
In case you don't, you can just repartition and reformat the drive before the installation process.
Once you are in Windows setup:
- shift+F10 to bring up the command line.
- diskpart [enter]
- list disk [enter]
- select drive [number] [enter]
- clean all [enter]
- create partition primary [enter]
- select partition 1 [enter]
- active [enter]
- format fs=ntfs [enter]
- assign [enter]
- exit [enter]
- exit [enter]
Hope this will help,
D_Know_WD