Open Command Prompt (cmd) as Admin.
Run Diskpart:
C:\WINDOWS\system32>diskpart
List disks:
DISKPART> list disk Disk ### Status Size Free Dyn Gpt -------- ------------- ------- ------- --- --- Disk 0 Online 298 GB 7168 KB Disk 1 Online 931 GB 0 B Disk 2 Online 1862 GB 0 B Disk 3 Online 7702 MB 0 B
Select the required disk:
DISKPART> select disk 3 Disk 3 is now the selected disk.
Make it read only:
DISKPART> attributes disk set readonly Disk attributes set successfully. DISKPART> exit Leaving DiskPart...
To clear the read-only attribute:
attributes disk clear readonly
Note that the readonly bit is not absolute. Viruses can ignore the bit.
Joel G Mathew, known in tech circles by the pseudonym Droidzone, is an opensource and programming enthusiast.
He is a full stack developer, whose favorite languages are currently Python and Vue.js. He is also fluent in Javascript, Flutter/Dart, Perl, PHP, SQL, C and bash shell scripting. He loves Linux, and can often be found tinkering with linux kernel code, and source code for GNU applications. He used to be an active developer on XDA forums, and his tinkered ROMS used to be very popular in the early 2000s.
His favorite pastime is grappling with GNU compilers, discovering newer Linux secrets, writing scripts, hacking roms, and programs (nothing illegal), reading, blogging. and testing out the latest gadgets.
When away from the tech world, Dr Joel G. Mathew is a practising ENT Surgeon, busy with surgeries and clinical practise.