Unable to find D drive on Windows Vista

I am not able to find the ‘D’ drive on my PC upgraded to Windows Vista. I can’t see it even while doing disk clean up. How can I locate it?

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Press the Start button and go to Control Panel from the start menu. Click the ‘Administrative Tools’ from the icons visible there. The next step required is to choose the ‘Computer Management’ from the options listed on the screen. Click on the ‘Disk Management’ and check whether the D drive is present there. If not, click on the Device Manager icon under Control Panel. Then, navigate through the icons to find the ‘D’ drive. Once you find the drive, you can double click on it to view more details.

Windows Vista

1. Click Start, and then click All Programs.
2. Click Accessories, and then click Run.
3. Type regedit, and then click OK.
4. If you are prompted for an administrator password or for a confirmation, type the password, or click Allow.
5. In the navigation pane, locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
6. In the right pane, click UpperFilters.
7. On the Edit menu, click Delete.
8. When you are prompted to confirm the deletion, click Yes.
9. In the right pane, click LowerFilters.
10. On the Edit menu, click Delete.
11.When you are prompted to confirm the deletion, click Yes.
12. Exit Registry Editor.
13. Restart the computer.

Windows XP

1. Click Start, and then click Run.
2. In the Open box, type regedit, and then click OK.
3. In the navigation pane, locate and then click the following registry subkey:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\Class\{4D36E965-E325-11CE-BFC1-08002BE10318}
4. In the right pane, click UpperFilters.
5. On the Edit menu, click Delete.
6. When you are prompted to confirm the deletion, click Yes.
7. In the right pane, click LowerFilters.
8. On the Edit menu, click Delete.
9. When you are prompted to confirm the deletion, click Yes.
10. Exit Registry Editor.
11. Restart the computer