Hello Stefan, thank you for your question. Before unlocking the luks partition, we can indeed see that there is one, using "lsblk --output FSTYPE,KNAME". A luks partition will show up with a string crypto_LUKS. But we cannot see which LVM LVs are contained within this crypto_LUKS partition. That is why we need to get the password from the user, so we have a chance to format only some of the LVM LVs, and not the whole luks partition. Best regards, Lars