Description of problem:  Installed F21 64-bit on an older computer using the pre-existing partitions.  Received a warning that the size of /boot might be too small (100M).  Install completed without any errors displayed.  System would not boot normally, but would boot to the recovery partition.  /boot was full and the initrd for normal boot was incomplete.  


Version-Release number of selected component (if applicable):  


How reproducible:  Have not tried to reproduce.  Manually deleted partitions to fix and allow computer to be usable.


Steps to Reproduce:
1.  Have older Linux in existing partitions.  /boot was 100MB in size.
2.  Install F21 (in my case, from USB)
3.  Select manual partitioning
4.  allow reformat of /boot and /, but keep existing partitions.
5.  Ignore warning about size of /boot
6.  Complete install (no errors displayed, install completes normally)
7.  Reboot, reboot fails with kernel oops

Actual results:  First boot fails with kernel oops (recovery mode is OK).

Expected results:  Error message displayed during creation of /boot aborting install.


Additional info:  I only received a warning about my /boot being
smaller than "RECOMMENDED", not that it was too small for an install.
The install appeared to succeed, despite not being able to build the initrd for the normal boot.  This is a silent failure and should be displayed as an error in anaconda.