(06-25-2020, 05:06 PM)Syonyk Wrote: If the exact same image, on the SD card, isn't running from the eMMC, something is "not as it should be" - somewhere.
But without a UART to see the boot logs, it's hard to tell what.
You shouldn't be creating a filesystem on the eMMC, though. You should be just blowing out to the whole block device. The image contains the partition header, partition table, filesystems, etc. I really think you need to stop using etcher, though. Use dd.
If you're booted from the SD card with the image on the eMMC, what does 'lsblk' output? Can you mount the root partition on the eMMC?
The only reason I created the filesystem on the EMMC was just in case there was some sort of u-boot left on the EMMC after flashing. I know it's far-fetched, but I just wanted to try everything. I actually used Etcher to flash the working MicroSD card, so I was just trying to do the exact thing on the EMMC just in case (I am perfectly capable of using DD, but I am a little wary of using it due to the myriad internet horror stories of overwriting the wrong disk
). Unfortunately, I have switched to the Fedora build on my EMMC for the moment, so I can't tell you exatly what lsblk outputs, but if I recall correctly, there were three partitions on the disk. I will try flashing again tomorrow maybe after I back up my Fedora installation, and I will see what lsblk outputs then. Mounting partitions on the EMMC is not a problem. In fact, when I was briefly flipping through the partitions on the EMMC when I still had Ubuntu 20.04 on it, everything looked just fine-there were files on each of the partitions and it all looked normal
. Is there a way I can have the log dumped to a file so I can see what is going wrong in the booting process? I am guessing that is hard to do if the OS won't boot to change that setting
. One note on the yellow light: It appears when the EMMC switch is on and/or a bootable MicroSD card is inserted, but nothing ever happens after that. If the EMMC is off and the MicroSD card is removed, when I press the power button absolutely nothing happens.
