Hide a Drive

Hide a Drive in Windows XP

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  Click Start -> Run type regedit in the box and click OK
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  Navigate to: HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\
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  From the menu, navigate to Edit -> New -> DWORD Value
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  Name the New Value NoDrives
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  Next, Right click NoDrives and select Modify, now check the Decimal option and under Value Data enter a decimal value for the drive you would like to hide. For example to hide C you would enter 4.
  See the list below for more values:
  A=1
  B=2
  C=4
  D=8
  E=16
  F=32
  G=64
  H=128
  I=256
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  Click OK once finished and restart your PC to verify the drive letter is no longer displayed