Disable the USB/CD drive

Using Registry Trick
However, not all editions of Windows has a Group Policy Editor (gpedit.msc). If you’re using a Home edition of Windows, you have to use this registry trick to disable the USB/CD drive access. Here’s how:

1. Press the Windows key + R to open the Run box. Type regedit and hit Enter.

usb block by policy

Method 1: Using Group Policy

1. Open up the Run box by press the Windows key + R. Type gpedit.msc and press Enter.
   
2. When the Local Group Policy Editor opens, navigate to the following location: