我已经尝试使用“Ubuntu Core WEBDM”映像为 Beaglebone Black 闪烁 SD 卡，即“ubuntu-core-WEBDM-alpha-02_armhf-bbb.img”，如此处步骤中所述。

但是系统没有启动。我在串行控制台中捕获了以下错误。提前感谢您的建议和帮助。

从控制台：

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#