@Joulinar
While I am waiting for the OPi4LTS to be delivered in a couple days, I have been looking at some information. My intent in creating my own image is to:
Burn the supplied Debian .img file to a TF card.
Boot the system to the TF card, then copy the image to eMMC.
Build the DietPi image on eMMC.
The question I have is: According to the users manual for this board, one of the first steps to copying the TF to eMMC is to format the eMMC. I have the option of 5 different formats: ext2/3/4, f2fs, and btrfs.
Is there any preference for one of these over the other if I am going to be converting the image to DietPi?