Enumerating all available drive letters in Windows

Question

I want to enumerate all available drive letters (which aren\'t already taken) in Windows using VC++.

How can I do this?

Answer 1

GetLogicalDrives and GetLogicalDriveStrings are not seeing network drives created in a different namespace.

For example calling the functions from a service running under Local System will not see the network drives created by a logged user.

This is happening starting with Windows XP. The following article describes this case: http://msdn.microsoft.com/en-us/library/windows/desktop/aa363908(v=vs.85).aspx