delete com1

D:/test>mkdir //./d:/test/com1

D:/test>dir
Volume in drive D is WinXP
Volume Serial Number is 5496-7A03

Directory of D:/test

01/19/2003  16:42    <DIR>          .
01/19/2003  16:42    <DIR>          ..
01/19/2003  16:42    <DIR>          com1
               0 File(s)              0 bytes
               3 Dir(s)   1,019,392,000 bytes free

D:/test>rd /s //./d:/test/com1
//./d:/test/com1, Are you sure (Y/N)? y

D:/test>dir
Volume in drive D is WinXP
Volume Serial Number is 5496-7A03

Directory of D:/test

01/19/2003  16:43    <DIR>          .
01/19/2003  16:43    <DIR>          ..
               0 File(s)              0 bytes
               2 Dir(s)   1,019,392,000 bytes free