文件夹驱动器存在

文件已存在：

Sub FileExists()
    Dim fso as Scripting.FileSystemObject
    Set fso = CreateObject("Scripting.FileSystemObject")
    If fso.FileExists("D:\test.txt") = True Then
       MsgBox "The file is exists."
    Else
       MsgBox "The file isn't exists."
    End If
End Sub

文件夹存在：

Sub FolderExists()
    Dim fso as Scripting.FileSystemObject
    Set fso = CreateObject("Scripting.FileSystemObject")
    If fso.FolderExists("D:\testFolder") = True Then
       MsgBox "The folder is exists."
    Else
       MsgBox "The folder isn't exists."
    End If
End Sub

存在驱动器：

Sub DriveExists()
    Dim fso as Scripting.FileSystemObject
    Set fso = CreateObject("Scripting.FileSystemObject")
    If fso.DriveExists("D:\") = True Then
       MsgBox "The drive is exists."
    Else
       MsgBox "The drive isn't exists."
    End If
End Sub