nvme is just a data disk, there are no OS files on it.
system boots from emmc.
In 32.7.1, there was a bug where I had to put boot/extlinux/extlinux.conf file on the nvme, even though I am booting emmc. The boot/extlinux/extlinux.conf on the emmc is ignored.
In 32.7.2, extlinux.conf are ignored from both nvme and emmc. cboot complains (from uart):
[0005.447] I> ext4_read_data_from_extent:298: Total file read should not be larger than file stat size
[0005.448] E> file /sdmmc_user/boot/extlinux/extlinux.conf read failed!!
[0005.448] W> Failed to load extlinux.conf binary from rootfs (err=202113305)
[0005.449] E> Failed to find/load /boot/extlinux/extlinux.conf