Open Local group policy editor with administrator user
2. It can be opened by command gpedit.msc in Run or command prompt
3. Navigate to
Computer Configuration\Administrative Templates\System\Removable Storage Access
4. Double Click on key All Removable Storage classes: Deny all access
5. Enable,then apply
6. Open command prompt and run gpupdate /force command or do a computer restart
7. Now removable storage is disabled
To enable removable storage again, disable policy given in step 4 and do steps 5-7
In given picture, removable storage is disabled
