Make a USB drive read only

Solution 1:

What about checking the "Read-only" box in the main folder's Properties and then applying to all subfolders?

My best option is use DISKPART form windows

DISKPART

LIST DISK (To check which flash drive listed as disk in windows)

SELECT DISK 1 (It should be disk 1 if you have single hardisk attached to computer, disks naming starts from 0 but partition starts from 1)

ATTRIBUTES DISK SET READONLY [And its done ;-) ]