Adding mender-partuuid causes an error: "/dev/sda1 Does not contain a valid PARTUUID path"

[mirzak]

You are using thud branch of meta-mender? Can you also share the configuration options in local.conf.

Also please note that mender-partuuid will not solve your problem, see my comment here,

Force Grub to select eMMC when Flash Drive plugged in

Makes sense now, that partuuid only applies to the mender_root variable and not to the mender_grub_storage_device. I can not think of an easy way to get around this, because GRUB is not able to scan/probe for a partuuid. But I know of one user who has solved a similar problem using the GRUB search command, which supports looking up filesystem image by label or fs-uuid. But this would require changes to the grub.cfg file + making sure that the partitions are labeled accordingly on each update.