How to make a Disk Read-only in Windows 11 You can make a disk read-only by using a built-in command line utility in Windows 11/10, Diskpart. Follow the instructions provided below carefully.

To open it, type partition into the search bar, then click on Create and format hard disk partitions. (In Windows 8, type partitions —yes, you need the s). Step 4: Shrink the existing partition.