https://help.ubuntu.com/community/Full_Disk_Encryption_Howto_2019
> DISCLAIMER: Doing this is an unsupported configuration for Ubuntu, and may cause up-to and including boot breakage on upgrades. If possible please use the password based or TPM FDE options provided by the Ubuntu installer.
https:/ /help.ubuntu. com/community/ Full_Disk_ Encryption_ Howto_2019
> DISCLAIMER: Doing this is an unsupported configuration for Ubuntu, and may cause up-to and including boot breakage on upgrades. If possible please use the password based or TPM FDE options provided by the Ubuntu installer.