I use smartphone with Android version 5.1.1 Whenever I try to delete files (videos, images, ebooks, etc) from my SD card I get the "Failed to delete" message. I looked for the solution to the problem online but didn't find the matching. What I tried was I unmounted my SD card and mounted it to my PC. Then I ran cmd as administrator and tried these commands in order:
diskpart list disk select disk 1 (which pointed to my SD card) attribut disk clear readonly
It didn't work out.
What do you suggest to do?