artie, I have created a dmg of 40Mb, (the smallest I could get) and it is 128-bit AES encryption and "No partition map" as you advised. On my desktop there is 2 icons...a private folder dmg and Disk Image. I have inserted a password in my keychain which I have set up precautions against forgetting it. How do I see if this works? Thank you for your reply. jaybass


OS 13.6.6 iMac (Retina 5K, 27", 2017, 3.4 GHz Intel Core i5, 24 GB RAM, 2400 MHz DDR4. SuperDuper. 1 TB Lacie HD