Open regedit and navigate to: HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control Create a new key named StorageDevicePolicies .
Inside that key, create a new named WriteProtect . Set the value to 1 to enable protection or 0 to disable it. Digital Forensics Software Write Blocker Software Download
These are smaller utilities focused specifically on preventing writes to USB flash drives. Write Blocker Software Download
A commercial Windows-based software write blocker that allows you to block multiple connected disks simultaneously. A 7-day trial license is often available for testing. Write Blocker Software Download
Depending on whether you need a simple tool for personal use or a forensically sound environment for investigations, there are several options for write blocker software.
For those who prefer not to download software, you can manually create a write blocker by editing the :