This tweak will hide a drive letter from showing up in My Computer, however the drive will still be able to be accessed manually by typing in the drive letter in explorer.
—-Tweak Steps—-
1) Start > Run > regedit
2) Goto HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\
Explorer
3) Right click in the blank space and choose New > “REG_DWORD (DWORD Value)”

4) Name is “NoDrives”
5) Right click on “NoDrives” and select Modify
5) Following the table below, enter in a DECIMAL value!!

Drive Letter
DECIMAL Value

A
1

B
2

C
4

D
8

E
16

F
32

G
64

H
128

I
256

J
512

K
1024

L
2048

M
4096

N
8192

O
16384

P
32768

Q
65536

R
131072

S
262144

T
524288

U
1048576

V
2097152

W
4194304

X
8388608

Y
16777216

Z
33554432

All Drives
67108863

To Hide Multiple Drives, Add their values together.
Example: A+D = 9 Decimal Value
A+C+D = 13 Decimal …

Note: This is not the fix for drag-drop of networked files….
Windows XP Fix For Networked Files
This should also work for any other type of file.
This is a page to fix the problem where you get a dialog “Your current security settings do not allow this action” when drag-dropping a folder/file from a .zip (ZIP Archive) to another open folder/window.
This is caused by how Windows XP SP3 (Only pre-RC2) treats downloaded files and their restrictions….
—-Fix For This Problem!—-
1) Right-click on the offending .zip file
2) Choose Properties
3) Click Unblock

5) Then Click Apply
6) …