GPT disk format

I’m trying to use NAS with GPT formatted disks. I see in the openwrt wiki that they are supported but do not seem to be recognized in auto discover and I don’t see an option in the pull down. Once the disk drives were installed I see there are two new mount points but show as follows:
Device ?(not present) Mount Point ? File System ?

GPT partition tables are recognized and supported, and the fdisk can create GPT disk label. However, the filesystem, that your partitions are formatted with, may be not recognized by luci. For example, xfs is not recognized.

You can test whether the kernel supports your filesystem by mounting by hand from command line and then configuring it manually in /etc/config/fstab.