Installing to a VM, the default storage size of VM disks is 8G in virt manager.
Trying to use this free space though results in very confusing error
messages in F19 TC2 where it says you need 4.6G and you have 8G free.
Only when I started again with a 16G virtual disk, did the install proceed.
I doubt 16G is really required?
This is most probably bug 876916.
*** This bug has been marked as a duplicate of bug 876916 ***