Part Number: J721EXSOMXEVM
Tool/software:
step 1
With "fakeroot make_ext4fs -s -l 4096M -L linux rootfs.img targetfs/ " , pack the targetfs directory into a rootfs.img file.
step 2
With "fastboot flash rootfs rootfs_pylon.img -S 512M" , burn the rootfs.img file to eMMC.
step 3
When booting up, the following error log is found.
[ 2.449182] EXT4-fs (mmcblk0p1): warning: mounting unchecked fs, running e2fsck is recommended
[ 2.458882] EXT4-fs (mmcblk0p1): mounted filesystem without journal. Quota mode: none.
[ 2.473191] VFS: Mounted root (ext4 filesystem) on device 179:1.
[ 2.479576] devtmpfs: mounted
[ 2.483379] Freeing unused kernel memory: 1984K
[ 2.487998] Run /sbin/init as init process
[ 2.494923] Run /etc/init as init process
[ 2.499277] Run /bin/init as init process
[ 2.503543] Run /bin/sh as init process
[ 2.507745] Kernel panic - not syncing: No working init found. Try passing init= option to kernel. See Linux Documentation/admin-guide/init.rst for guidance.



