Sure thing. GRUB supports LUKS, and you'll need to set up both Debians for LUKS as well. I know how to do this on Archlinux, but not Debian.
On Tue, 2016-05-17 at 09:24 -0400, Ralph Sanchez wrote: > Kind of a green user,just wandering if it's possible to perform a > dual > boot with two linux/debian OS's and still use full disk encryption, > or > encrypt the seperate partitions and how this works if so. >