CMD cd to other drives except C:\ not working

Question

Possible Duplicate:
Using cd Command in Windows Command Line, Can't Navigate to D:\

I am unable to cd D:\ or cd D: or to any other drives. I am facing this problem from last 2 months but until now cmd was not that important to me.

I have checked multiple times with 2-3 anti-virus but it doesnt show any, and according to me there shouldnt be, because I visit only a few top sites, use genuine software and plug only my usb drive in PC.

This is what happens when I try to cd

Answer 1

You do not need to cd d:\ just enter d:.

CD stands for change directory, which is not what you want to do.

Answer 2

Use one of the following:

C:\Ruby\bin> cd /d D:\
D:\>

or

C:\Ruby\bin> cd D:\
C:\Ruby\bin> D:
D:\>