So the Win10 Tech Preview will be expiring tomorrow. I need a change. I am trying to install OpenSUSE, but I'm not quite confident where I should designate the Linux partition. I put in the install DVD and boot up YaST. I am greeted by this table:

I have two drives. One is a 120GB SSD. The other is a 2TB HDD. I want to install SUSE on the SSD, but adding a new partition doesn't appear to do the trick.
- I resize sdb1 to 70 GiB and free up 41.35 GiB of space
- I create a new primary partition (41.34 GiB, OS Role, ext4 filesystem)
Accepting this setup leads to a warning.
Warning: Some subvolumes of the root filesystem are shadowed by mount points of other filesystem. This could lead to problems. Really use this setup?
How can I prevent this from causing problems?