Description of problem: When installing F18 Beta on a system previously used for an F18 installation it is very non-obvious how to go about getting it to install on / over the existing partitions. In particular once the user discovers the 'Reclaim Space' dialog there are not on initial inspection any working options. The 'Reclaim Space' button is disabled regardless of whether the user has a partition selected. Currently it seems the correct approach from here is to double click one of the partitions in the right hand column of the list (clicking in the other columns does nothing) to expose the preserve/shrink/delete options). There is no obvious visual cue for this. Version-Release number of selected component (if applicable): F18 Beta
*** This bug has been marked as a duplicate of bug 866209 ***