Comment 7 for bug 1762258

The **partition name** is separate from the volume label. Each partition within the GUID Partition Table has a reserved entry for the **partition name**.

See Partition Entries in the GPT:
    https://en.wikipedia.org/wiki/GUID_Partition_Table#Partition_entries_(LBA_2-33)

You can check with other tools to read the **partition name** in GPT such as:

    sudo gdisk -l /path-to-device

Where /path-to device is something like /dev/sda