Documentation starts with... You First boot might take a little while (though not minutes), there's a rootfs growing initramfs hook running called resizerootfs that you can disable after first boot.
It is not clear how this is best done.
Searching on my board, I find two references to resizerootfs
I'm referring to: https://github.com/Plebian-Linux/quartz64-images/blob/main/RUNNING.md
Documentation starts with... You First boot might take a little while (though not minutes), there's a rootfs growing initramfs hook running called resizerootfs that you can disable after first boot.
It is not clear how this is best done. Searching on my board, I find two references to resizerootfs