Okay, this looks a bit different than what I expected.
The warning about /dev/sda being GUID partition is okay, that's your system's linux rootdisk, and nowdays old-style partition tables are considered legacy.

the other disks, sdb to sdd thouhg, seem to be windows fat partitions, probably housing windows on your machine.

I cannot see any N9 partitions there, which is strange...

Could you do a "dmesg" command after you push the kernel & initramfs to your N9?
There could probably be a logging about the reason why the filesystem exports are not detected....
(dmesg output is fairly long, just copy the last 50 lines or so here)