Thanks but I think, that I am the wrong guy for the job. It still doesn’t work because, there is no header.
Maybe I can do it with --header /dev/loop1p1 while encryption is on /dev/loop1p2, but it was not going anywhere.
I tried to directly encrypt via jumpdrive:
sudo cryptsetup reencrypt --encrypt /dev/sdb2 --header /dev/sdb1
one hour later:
This doesn’t work.
Hi ein_dude,
if you aware of loosing all data and flash the phone with crimson. You may want to use the tresore/backup app to create a backup on USB or Cloud or MSD Space.
Edit-Paragraph: I may have you misunderstood. I have also some not encrypted MSD but a Lukes encrypted Crimson L5 installed Flash Pureos Setup. You flash pureos and add a LUKES encryption with a different pass later.
Then you could more easy flash crimson by using a Linux Laptop (or a Windows one -PureOS Crimson Development Report: June 2025 – Purism) like suggested in the wiki:
https://docs.puri.sm/Hardware/Librem_5/Maintenance/Reflashing.html
With the change of source in the downloaded and flashing part:
./librem5-flash-image --stable --variant luks --dist crimson
Then you will have a L5 phone with crimson.
But have a Backup and later you like to install up to date Apps. gilally have some overlay - but i just installed some preferred flatpaks and it was fine to use.
Regards
Christal
Hi Christal,
thank you for that! I wasn’t able to just install crimson beforehand. Now this was fresh and easy. 
The thing is that I was greeted with the “low disc space notification” and therefore I won’t use the luks variant. Maybe this issue will resolve in future crimson luks variants, but I am okay by staying in plain file system. 
Maybe it is possible to resize via ssh connection or jumpdrive, but I am good with the solution I have now. Just wanted to test the luks variant.
I am only a user and I can only use what these great developers achieve. Thank you all!
Regards,
Alex
Actually, you should have all disk space, the warning is probably the result of a race condition, see: First boot gives low disk space warning (#51) · Issues · PureOS / Tasking · GitLab
