Format eMMC in EXT3

I think that you need to add a package.

Ex) Add the following to build/conf/local.conf IMAGE_INSTALL_append = " e2fsprogs"

For details, please refer to Yocto manual.

Ygohda (talk)

Thank you very much for having you teach it.
I try it. I report the result some other time.

Kazu (talk)

Thanks to you, I was able to format eMMC.
And I was able to write in Linux image at eMMC.

Kazu (talk)