I assume that you have the OS in one partition ( C) and you want to install the application in the second partition (D).
Note in that case that even though the application will be installed in the second partition there will also be files written to the OS system32 folder and also some installation files will have to be decompresses in the temp which is in C so if the first partition doesn't have the needed space you will get this message.
Try to empty some space in C , empty the temp folders and id this is not enough you may try to move the swap file to D , this will give you about 1-2GB
Alex