Pinebook Pro doesn't boot most of the time unless connected via USB-serial!
Ah, uboot.. You realize that uboot also has a dtb, obviously not correct, not finding mmc,, emmc
>Since I was trying different versions of the distro
I assume these were booting?
Experiment time!!!!
(with dd) save emmc mbr, save first 16M of emmc , blank first 16M, restore mbr
This then will be forced to use uboot on SD card, test various uboots, various distros
To make double sure, save SD mbr, delete all partitions with fdisk/cfdisk (on SD)
This then will be forced to use SD uboot and emmc distro
If seems OK, after several boots, copy 1st 16M SD ->emmc, restore emmc mbr
I prefer mrfixits uboot
Note: do not save sd mbr on sd, after a reboot or fdisk write, mbr is re-read,
you will lose access to sd partitions,, dd does NOT re-read mbr (which is in memory)
>Since I was trying different versions of the distro
I assume these were booting?
Experiment time!!!!
(with dd) save emmc mbr, save first 16M of emmc , blank first 16M, restore mbr
This then will be forced to use uboot on SD card, test various uboots, various distros
To make double sure, save SD mbr, delete all partitions with fdisk/cfdisk (on SD)
This then will be forced to use SD uboot and emmc distro
If seems OK, after several boots, copy 1st 16M SD ->emmc, restore emmc mbr
I prefer mrfixits uboot
Note: do not save sd mbr on sd, after a reboot or fdisk write, mbr is re-read,
you will lose access to sd partitions,, dd does NOT re-read mbr (which is in memory)