neowin[.]net/news/veracrypt-gets-bootloader-memory-encryption-uac-quick-format-upgrades-on-windows-1110/
It's been 1.5+ years since the last one. VeraCrypt is very well known, open source disk encryption software similar to Microsoft's BitLocker, without BitLocker's biz-oriented ability to have master keys available for IT management. VeraCrypt can run portably, and can encrypt entire hard disks/SSDs, VHDs [Virtual Hard Disks], partitions, &/or removable media. You can create encrypted VHDs to use for storing whatever, or to install an OS [VMs (Virtual Machines)], and it can create undetectable nested VHDs -- the password used determines which VHD is decrypted/opened.