FSO对象有Drives属性，他就是你需要的，比如下面这段vbs代码，就是遍历盘符
Function ShowDriveList
Dim fso, d, dc, s, n
Set fso = CreateObject("Scripting.FileSystemObject")
Set dc = fso.Drives
For Each d in dc
n = ""
s = s & d.DriveLetter & " - "
If d.DriveType = 3 Then
n = d.ShareName
ElseIf d.IsReady Then
n = d.VolumeName
End If
s = s & n & "<BR>"
Next
ShowDriveList = s
End Function
