Write-protect USB/flash disk without built-in switch

Menjadikan Flashdisk Write Protected / Read-Only ~ SoloIFX 2017

pakai DISKPART (agak repot, tapi free)

[OFFICIAL] Encrypt your USB flash drive - Ukeysoft USB Encryption User Guide (BELUM DICOBA)

We offer the trial version for you to experience all the functions, please enter the trial password - "123456", but you can not change the default password. If you want to remove the restrictions, please upgrade to the full version as soon as possible.

Create Fake Dummy File on USB Flash Drive to Enable Write Protect and
Prevent Modification
www.raymond.cc/blog/archives/2009/02/17/create-fake-dummy-file-on-usb-flash
-drive-to-enable-write-protect-and-prevent-modification/
Interesting comment: "Wouldnt this reduce the lifespan of the drive?"

Related:
6 Freeware To Lock & Disable USB Drives - Prevent Data Theft In Office (geckoandfly.com)

Flash disk suddenly become write protected
External Hard Drive Read Only Issue and Solution