bind-home.conf not binding to /home on LL2.4/win8.1 UEFI dual boot set-up

[m654321]

I have just set up a LL2.4 dual boot on a new laptop, pre-installed with win8.1, with UEFI (fast boot, secure boot) enabled.  Everything has worked very well until I got to the stage of binding LL2.4's  /mnt/DATA partition on sdb to My Home Directory on sda.  The laptop has two separate physical drives: SSD1 (sda) for the operating systems, SSD2 (sdb) for the /mnt/DATA.  I have done this set-up before, but only with an MBR file structure, not a GPT one as in the present set up.  I don't know if the use of GPT in the present set-up affects binding, or if the information I should enter in either the fstab file or the bind-home.conf  file is different for GPT compared to MBR set-ups. I'd be grateful if you could advise.

At the moment when I reboot the laptop & choose LL from the grub screen it doesn't fully boot but hangs indefinitely at the screen with the image of the feather with the progress bar below it.  I let the progress bar run completely to the right, but still no rebooting. Any help on this one is much appreciated  as I'm out of my depth here.

Regards
Mike