I have tried the flashing SD card for Beaglebone Black with 'Ubuntu Core WEBDM' image i.e. 'ubuntu-core-WEBDM-alpha-02_armhf-bbb.img' as mentioned in the steps here.
But the system is not booted. I have the following error captured in serial console. Thanks in advance for your suggestions and help.
From console:
Net: <ethaddr> not set. Validating first E-fuse MAC
cpsw, usb_ether
Hit any key to stop autoboot: 0
switch to partitions #0, OK
mmc0 is current device
SD/MMC found on device 0
reading boot.scr
** Unable to read file boot.scr **
reading uEnv.txt
237 bytes read in 12 ms (18.6 KiB/s)
Loaded environment from uEnv.txt
Importing environment from mmc ...
Running uenvcmd ...
** File not found snappy-system.txt **
## Error: "snappy_boot" not defined
** File not found /boot/zImage **
switch to partitions #0, OK
mmc1(part 0) is current device
SD/MMC found on device 1
reading boot.scr
** Unable to read file boot.scr **
reading uEnv.txt
** Unable to read file uEnv.txt **
Running uenvcmd ...
** File not found snappy-system.txt **
## Error: "snappy_boot" not defined
** File not found /boot/zImage **
## Error: "nandboot" not defined
U-Boot#
Best Answer
It seems uEnv.txt (on your SD card) is wrong. Change
${bootpart}
to${mmcdev}:${mmcpart}
, i.e.This should fix the error "File not found snappy-system.txt" and allow U-Boot to continue.