Hi,
Please follow the steps to set the location of your default download folder.
a) Click on Start, then click on Computer
b) Click on C:\ drive, and then click on User’s folder.
c) Under user’s folder click on your user name, then click on Downloads, right click on downloads select Properties
d) Click on the Location Tab.
e) Under location tab Change the location to the require drive.
f) Click on Apply, finally click OK..
Hope this information is helpful.