I'm a very long time ubuntu user (over a decade) but have not been here as I've had no issues with Ubuntu. With the arrival of 20.04 LTS I decided to encrypt my data (or system if needed). I'm looking for the following:
- Method to reinstall ubuntu with LUKS encryption on a previous LUKS encrypted ubuntu install on a dual boot system with Win10.
- Keep all my personal files (ie
/homefolder) intact, with or without a separate partition. I do not wish to move everything out, reinstall and then move stuff back in.
- Simple GUI based approach through the standard installer. I know how to use the command line but I'd rather not, especially for something as sensitive as encryption.
What I'm looking for is basically the same as this document: (https://help.ubuntu.com/community/UbuntuReinstallation) except that I need it on an LUKS encrypted system/partition. I tried doing this on a spare system with 20.04, and I could not find a way of telling the installer the passphrase to the encrypted system. The end result was a reinstall that wouldn't boot or the encrypted partition gets wiped out. I also tried to run installer with and without pre-unlocking the encrypted partition but to no avail'.
I am able to do all of the above with Fedora,OpenSUSE,Manjaro, (although they only do this when /home is on separate partition, which is fine for me) so I'm not sure what I'm doing wrong in Ubuntu.