In message , aiole
writes:
Veracrypt. (formerly truecrypt) will encrypt files or a drive.
It is free.

https://www.veracrypt.fr/en/Home.html

Was this posted in reply to a query? (If not, why was it?)
--
J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf

science is not intended to be foolproof. Science is about crawling toward the
truth over time. - Scott Adams, 2015-2-2