5a not boot with emmc, stack at loading debian

It’s another way to use the emmc. flash SD card (less size than the emmc you use)first, do the full upgrade, then Colon the image(using win32imagemanager), write to emmc. For me it worked. Still can not compile the image because the u-boot image.

Why do all this hassle when you could just dd the microsd to the eMMC directly on the running system? I mean, you don’t need to use Windows just to clone a drive

Yes, there must have lots of ways to do that. But thank you, I will try that.