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Orange Pi Zero Plus 2 (H3) boot device

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Hello to everyone!


I am trying to configure dual boot using u-boot. But I've got some misunderstandings, maybe someone will help me with that problem.


When I'm booting from SD card everything works fine:  rootdev=/dev/mmcblk0p1 (armbianEnv.txt) or rootdev=UUID=XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX in both cases.


When I'm booting form eMMC something goes wrong: I can not set rootdev=/dev/mmcblk1p1 cause in this case I've only error message:


But if I'm setting as rootdev=UUID=XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX everything works fine. 


Maybe it is bad way to use /dev/..., but I need it. 


So, I tried a lot of ways to fix that and found that, such situation only with legacy kernel, mainline works without any issues.


Where I'm doing wrong?

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