How to Protect your Disk with a password by Disk Utility Easily – Mac OS

1. Insert your disk to your Computer (Mac).
2. Go to Disk Utility.
3. Select your Disk.
4. Click on Erase button.
5. Write a name for your Disk and Select OS X Extended (Journaled, Encrypted).
6. Write your Password, Write it Again.
7. Click Choose button.
8. Click Erase button.
9. It’s take a while.
10. That’s it. Enjoy.

In the next time when you insert your disk you should enter the password to show your files.

Video

Protect a disk with a password – Disk Utility Mac OS

POST LINK