Only half of SSD space
I've recently installed Fedora 25 (and Korora 24) and I have same problems on both systems.
I have a 120Gb SSD, and three partitions. 54Gb for Filesystem Root, 57Gb for Home and 8Gb for swap. I assume it means that I have ~50Gb for my regular user accout and ~50Gb for root user. How do I merge this space?
P.S. I don't know why, but when booting I have 3 choices of booting Korora (same on Fedora 25).
http://imgur.com/a/3ah8Y http://imgur.com/a/wcsxR http://imgur.com/a/3z2ZT
Can you clarify what you want to do? In other words, you want to "merge" how the different distributions use the entire SSD (e.g. both distributions "share" the same partition for their /home mountpoint). Or, are you asking how you can "merge" the SSD space you have allocated between the root user and "normal" users within one of these two distributions (e.g. all 100 GB for fedora users and the root user is one "slice" of the SSD)?
Three choices because you have three kernels installed, the most current and two older ones. Don't touch that configuration.