i have two drives c and d and want ot merge/combine them, could you please tell how to do it?
Are they two separate hard drives or two separate partitions on the same drive?
It could get messy. Any good reason to do it? Why not buy a new drive 10 times bigger, clone C: onto it, and have a ginormous new D: in the rest of the space?
To give sensible advice, you need to give more detail, such as what is on C: and D:, for instance are there programs installed on D:, or just data etc etc
Norton PartitionMagic could do this if it is on the same drive. You can combine them without affecting Windows.