Switch to EFI from Legacy during upgrade 5 to 6

[Lock]

Hi, eveyone!

I'm not sure if and how I can switch from legacy to UEFI boot when uprage to pve6 in detail. It is excited for the support of UEFI boot on ZFS in pve6! Because I have to boot grub from external usb disk manuly each time, grub on ZFS disks only run in fresh installtion for a short time.

I have read upgrade guide and follow posts, but still has some questions:
https://pve.proxmox.com/pve-docs/pve-admin-guide.html#sysboot
https://forum.proxmox.com/threads/u...-do-a-pve-efiboot-tool-init.60475/post-278880
https://forum.proxmox.com/threads/proxmox-ve-6-0-released.56001/#post-257891

My pve5 has 12*10T in ZFS, which use pve default installtion opinion, one of disk is :

lsblk -o NAME,PARTTYPE,FSTYPE,SIZE /dev/sd*
sdl                                         zfs_member  9.1T
├─sdl1 21686148-6449-6e6f-744e-656564454649 zfs_member 1007K
├─sdl2 c12a7328-f81f-11d2-ba4b-00a0c93ec93b zfs_member  512M
└─sdl3 6a898cc3-1dd2-11b2-99a6-080020736631 zfs_member  9.1T

Question 1: Can this 512M zfs_member be used for ESP?
Question 2: Do pve switch legacy to UEFI boot during normal upgrade procedures? (I guess no).
Question 3: If question 2 is no, should I use pve-efiboot-tool to install EFI after upgrading to pve6? And it should be done under legacy boot in first reboot.

Thanks!

 

[fabian]

1: yes
2: no
3: yes

 

[Lock]

1: yes
2: no
3: yes

Thanks for you kindly reply, I will upgrade to pve6 later.