Open the Registry Editor by going to Start/Run and typing in “regedit” (without the quotes). Find your way to…
HKEY_CURRENT_USER\Software\Mcft\Windows\CurrentVersion\Policies
Click on “Explorer”.
Double-click the “NoDrives” key in the right column. If you don’t find a “NoDrives” registry key, just right-click in the right pane and choose “New/DWORD Value” then name the key “NoDrives”.
You’ll see a value like “0000 00 00 00 00″. This is where the fun starts. The four sets of double zeros (after the “0000″) are where you’ll enter the values for the drive/partitions. Now, stay with me on this—it’s not as complicated as it sounds:
The first column is for drives A-H, the second for I-P, the third for Q-X, and the fourth for Y-Z.
The values for each drive are as follows:
1 - A I Q Y
2 - B J R Z
4 - C K S
8 - D L T
16 - E M U
32 - F N V
64 - G O W
80 - H P X
So, let’s say you want to hide drive D. In the first column you would put “08″. For drive K you would put “04″ in the second column.
But what if you want to hide more than one drive in a column? Simply add the values together: D+E = 8+16 = 24. So in the first column you would put “24″.
