How to install Xubuntu with LVM+LUKS and encrypted second HDD?

Question

Encryption

Tell me how to properly install Xubuntu with LVM + LUKS so that two hard ones are encrypted and the key is stored on a USB flash drive.
There will be two sections on the flash drive, one for data, and the second where there will be a key.
Immediately tell me how much space you need for the second section of the flash drive.
And also is it possible to make LVM + LUKS when installing the system.
It is necessary that hibernation also works at the same time, otherwise I found a very ancient but detailed article on Habré, but there for the server, and for me for home use

Answer 1

LVM + LUKS is just done when installing the system. Why do you need a key on a flash drive? The key is the password and it is better to keep it in your head. Then there will be two sections left: the encrypted root and the unencrypted boot (it cannot be encrypted). If you are paranoid, you can bring the boot to a flash drive
>> There will be two partitions on the flash drive, one for data,
are you talking about /home?