Thanks for your reply.
There is no label named writable…
(initramfs) ls -l /dev/disk/by-label/
lrwxrwxrwx 1 15 system-boot -> ../../mmcblk1p1
(initramfs)
And there is no error while ubuntu-image working…only some warning…But i use pre-downloaded core.snap…
Warning: for backwards compatibility, `ubuntu-image` fallbacks to `ubuntu-image snap` if no subcommand is given
-o/--output is deprecated; use -O/--output-dir instead
DEBUG:ubuntu-image:-> [ 0] make_temporary_directories
DEBUG:ubuntu-image:-> [ 1] prepare_gadget_tree
DEBUG:ubuntu-image:-> [ 2] prepare_image
Copying "./core_5546.snap" (core)
Copying "./tsimx6-kernel_4.4.30_armhf.snap" (tsimx6-kernel)
Copying "./tsimx6-gadget_16-0.1_amd64.snap" (tsimx6-gadget)
tsimx6-kernel already prepared, skipping
tsimx6-gadget already prepared, skipping
core already prepared, skipping
WARNING: "tsimx6-kernel", "tsimx6-gadget" were installed from local snaps disconnected from a store and cannot be refreshed subsequently!
DEBUG:ubuntu-image:-> [ 3] load_gadget_yaml
DEBUG:ubuntu-image:-> [ 4] populate_rootfs_contents
DEBUG:ubuntu-image:-> [ 5] populate_rootfs_contents_hooks
DEBUG:ubuntu-image:-> [ 6] calculate_rootfs_size
DEBUG:ubuntu-image:-> [ 7] pre_populate_bootfs_contents
DEBUG:ubuntu-image:-> [ 8] populate_bootfs_contents
DEBUG:ubuntu-image:-> [ 9] prepare_filesystems
DEBUG:ubuntu-image:-> [10] populate_filesystems
DEBUG:ubuntu-image:-> [11] make_disk
DEBUG:ubuntu-image:-> [12] generate_manifests
DEBUG:ubuntu-image:-> [13] finish
DEBUG:ubuntu-image:-> [14] close
And is it diffcult to modify 4.1.x or 4.9.x kernel to core kernel? I want to make sure that i’m not on the wrong ways…My board is 6ull.It’s not supported in sample-kernel and the supported kernel version is 4.1 and 4.9 modified by NXP.The apparmor I have tried to modify according to commits.But a lot of files are changed . I have gave up to modify it from NXP kernel.
But it seem that someone in forum have make it.Here is the post.So I want to try add 6ull support to core kernel or just change imx6ull to imx6ul in hardware…
Can you give me some advices about it?Thanks…