USB Write Protect is a tiny, portable application that will protect your USB drives from accidental file deletion or modification.
To protect a USB drive run the program and select “Enable Write Protect” and click apply. If you try creating any file on the drive now you will get an error as below:
Note: If a USB drive is already plugged in and then you enable write protect it may not work. Remove it and plug it again.
When you want to bring the drive back to write state, select “Disable Write Protect” and click apply. That’s it!
USB Write Protect works with Windows 7, Vista and XP.
Download: USB Write Protect [12 KB]