Existing Manjaro installation with BIOS/legacy grub - how to properly move on to UEFI grub?

[jmio75]

maybe this can help you:

Is it possible to migrate Manjaro from existing legacy BIOS installation to UEFI?

yes do backup , if you backup all ( / and /home ) , you restore by grsync or timeshift boot on USB iso manjaro 1 backup each partition 2 launch gparted format GPT and create /boot/efi ( 33 to 100Mo fat32 with flag boot & esp ), / and /home 3 restore back for / and /home 4 you will go in chroot for a - update new UUID ( lsblk -fs & /etc/fstab ) redo a 2nd chroot for EFI b - restore GRUB for EFI for check before format GPT and restore backup that all efi is ok open a terminal and …

and / or this

UEFI - Install Guide - Manjaro Linux 30

PS
but I never did this before