大家好，
我用的芯片为imx6solo, BSP为yocto L4.1.15-2.1.0。
目前使用SD卡和micro SD卡启动时出现很奇怪的现象。根据《i.MX_Linux_User's Guide.pdf》文件对SD卡和micro SD卡进行分区，格式化，然后烧写同样的u-boot.imx，zImage，设备树，文件系统。在启动时，SD卡可以正常启动到文件系统，但是使用micro SD卡插上卡套，然后启动时，就只能启动到uboot，到kernel阶段就报错，如下log。另外，我仔细对比了两个SD卡的状态，使用df -h和fdisk -l查看了，基本都是一样的，请教各位大神帮助，谢谢。
U-Boot 2016.03-svn1773 (Mar 22 2019 - 14:30:42 +0800)
CPU: Freescale i.MX6SOLO rev1.2 996 MHz (running at 792 MHz)
CPU: Extended Commercial temperature grade (-20C to 105C) at 59C
Reset cause: POR
Board: MX6SOLO RIoTboard
I2C: ready
DRAM: 512 MiB
MMC: FSL_SDHC: 0, FSL_SDHC: 1
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
config_ipu_di_clk: freq = 148500000.
wait for pll5 lock.
config_ipu_di_clk: set pll5 clock to 294000000Hz.
switch to partitions #0, OK
mmc0 is current device
Net: Board Net Initialization Failed
No ethernet found.
Normal Boot
switch to partitions #0, OK
mmc0 is current device
reading zImage
6093216 bytes read in 294 ms (19.8 MiB/s)
Booting from mmc ...
reading imx6solo_mehowboard.dtb
33830 bytes read in 19 ms (1.7 MiB/s)
Kernel image @ 0x12000000 [ 0x000000 - 0x5cf9a0 ]
## Flattened Device Tree blob at 18000000
Booting using the fdt blob at 0x18000000
Using Device Tree in place at 18000000, end 1800b425
Starting kernel ...
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(179,2)
---[ end Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(179,2)
random: nonblocking pool is initialized
