Reconnecting Library to Steam

Alright, sports fans - I need your help. In order to try to troubleshoot a separate issue, I deleted everything in my Steam folder except for the executable and the Steamapps folder. The problem is, I had many games stored on a separate drive on my computer, which are now not being recognized by Steam. Does anyone know how to re-add a library on a separate drive (i.e. the HDD on E:\) back into Steam, which currently resides on the SSD on C:\?

Any help would be appreciated.

Nevermind - it resolved itself after a few restarts.

On a related topic, anyone suddenly have their client crash anytime they try to start a voice chat?