1 I can't be bothered to tell you any more [about Snide], so you'll have to ask him what he's doing in this game when you meet him.. [ 2 DK is] the leader of this mangy bunch and tells me that he has learned a whole new bunch of 'mean, reptile-stomping' moves.
Drive mapping. Drive mapping is how operating systems, such as Microsoft Windows, associate a local drive letter (A through Z) with a shared storage area to another computer over a network.
Unless you're connecting to a shared folder or drive on a network, just ignore it. Your drives are all local so it wouldn't be something you'd use. Now, lets say you have another computer on your network and they share a music folder on the network. Map drive would allow you to assign a local drive letter to that network share.