Do I need boot partition on UEFI & Luks?

Question

I'm trying to install Gentoo on LUKS partition (simple layout - single root partition, without underlying LVM).

Right now it works, but I doubt if I done it properly. I've got such a partitions:

First of all SSD - sda

• /dev/sda1 /boot/efi
• /dev/sda2 /boot
• /dev/sda3 - LUKS (/dev/mapper/root mounted as /)
• /dev/sda4 - future Windows

There is also HDD - sdb, which will be probably LUKS mounted as /home/user/data.

First of all - do I need /dev/sda2? Is it necessary, to have an unencrypted boot, if I'm booting from UEFI?

Secondly. Is is possible to decrypt /dev/sdb1 and /dev/sdb2 with the same passphrase as/dev/sda3 without writing it twice?

And thirdly - does this layout make any sense on a SSD/HDD tandem?

Answer 1

• First, Is mandatory has a unencrypted /boot partition.
• Third, of course. It is a really good choose.

The second question, I do not have a answer. But I think who you must retype the password three times.

Answer 2

Yes, you need a FAT32-formatted GPT partition with "EFI System Partition" type (the particular GUID might be represented differently within various tools, e.g. "boot" flag in parted); see also this introduction.

PS: your question was quite hard to read and understand, did you understand what you wanted to ask in the first place?..