So we have a yocto warrior 2.7.1 system. Converting from an EOL board based on an ancient yocto to a newer one.
I have the following added to make rootfs RO.
IMAGE_FEATURES += " read-only-rootfs"
We have a very small handful of times when we need to do this:
mount -o remount,rw /
and of course revert back to RO.
The thing is that w/ the .hddimg it fails with
mount: /: cannot remount /dev/root read-write, is write-protected.
Of course the .wic image works fine, but unfortunately I can't use the .wic image for this project.
Any ideas would be greatly appreciated.
Extra info: Removing read-only-rootfs from the features then simply changing the fstab entry to ro from default in meta/base-files like below works, but creates other issues.
/dev/root / auto ro 1 1