If the partitioning fails a small banner shows at the bottom of the screen with "click here for more information". There's no way (I could find) to navigate there without a mouse or pointer device.
This has been fixed in Fedora by adding a link in the text of clickable info bars. It's not the easiest thing to see, but you can get there with a keyboard.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.