Still can't figure out the permissions problem for copying to second disk

[Tyrannocaster]

You bet! Here it is:

# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
# <file system> <mount point>  <type>  <options>      <dump>  <pass>
# / was on /dev/sda1 during installation
UUID=203851b3-54bb-44f5-a27a-eca1f9a6cafe /              ext4    errors=remount-ro 0      1
/swapfile                                none            swap    sw              0      0