AnsweredAssumed Answered

SD card can't boot

Question asked by Ka-Yi Yeh on Nov 27, 2018
Latest reply on Nov 29, 2018 by Ka-Yi Yeh

Hi there,

I followed the instruction to bitbake and make linux images for my imx8mqevk board. It successfully generated some files including *.sdcard.bz2, and uboot files. But when I tried to make the sd card to boot, the card can't boot up by imx8mqevk. Please help. Below is the detail system and procedure. Please tell me if more information is required.

Host system: Ubuntu 16.04

build target: MACHINE: imx8mqevk DISTRO=fsl-imx-fb

$ bitbake core-image-minimal

the files in the deploy/images/imx8mqevk: there are 73 files, please refer the attachment for list. However, it includes:

core-image-minimal-imx8mqevk-20181127235204.rootfs.sdcard.bz2, the file size is 26335920.

$cp core-image-minimal-imx8mqevk-20181127235204.rootfs.sdcard.bz2

^ I copy the image to HOME because there is a link file refer to this and I can't bzip2

$(@ HOME directory) bzip -d core-image-minimal-imx8mqevk-20181127235204.rootfs.sdcard.bz2

then I insert a 16GB SD card to the host machine, which is mounted to sdc, then

$sudo dd if=core-image-minimal-imx8mqevk-20181127235204.rootfs.sdcard of=/dev/sdc1 bs=1M && sync

>160+0 records in
>160+0 records out
>167772160 bytes (168 MB, 160 MiB) copied, 0.0820627 s, 2.0 GB/s

However, when I put the SD card to my imx8mqevk board, which can be booted by another SD card, nothing show up from COM port, and the LED near USB port doesn't blink, either.