Wonder u are thinking in a network environment where you shared files and folders.To know which folders are  shared on  which drive on a computer it is not necessary to search every drive of a Computer .Use Net Share command to find them

Using “net share”

1.click start and click Run command and type “cmd” without quotes then a command prompt window opens ,then type “net share” without quotes will display the shared folders in Computer.

           net share

Ex:C:\Documents and Settings\venkatesh>net share

Share name   Resource                        Remark

E$           E:\                             Default share
ADMIN$       C:\WINDOWS                      Remote Admin
IPC$                                         Remote IPC
D$           D:\                             Default share
print$       C:\WINDOWS\system32\spool\drivers
                                             Printer Drivers
F$           F:\                             Default share
C$           C:\                             Default share
New Folder   C:\Documents and Settings\venkatesh\Desktop\New Folder

New Folder(2)
             F:\New Folder(2)