How to Block Read/Write Access to USB or CD Drive through Registry Editor? Restart your computer to apply the policy. Then double-click the policy name, “ Removable Disks: Deny read access.” On both paths, you will find a policy on the right-side pane, “ Removable Disks: Deny read access.” According to your needs, you can navigate to the correct path. If you want to apply the policy for all user account, then browse the following path in the Local Group Policy Editor window:- Computer Configuration > Administrative Templates > System > Removable Storage Access Using the above path, you can apply the policy to the current user only. When the Local Group Policy Editor window opens, navigate to the following path from the left sidebar:- User Configuration > Administrative Templates > System > Removable Storage Access Then, in the Run box, type gpedit.msc and hit Enter from the keyboard. To do that, call the Run dialog box by pressing Windows + R keys from the keyboard. You can use the alternate method if your Windows does not support Local Group Policy Editor. Please note that gpedit.msc is not a part of any Windows Home edition operating systems. How to Block Read/Write Access to USB or CD Drive using Local Group Policy Editor? How to Block Read/Write Access to USB or CD Drive through Registry Editor?.How to Block Read/Write Access to USB or CD Drive using Local Group Policy Editor?.