Description of problem:

Trying to upgrade to FC7, but didn't have enought (1.1GB) space
for the process.  This was reported and I rebooted the extant 
system to find some space.  When I restarted the upgrade it failed
right away with an anaconda crash.

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


How reproducible:

100%

Steps to Reproduce:
1. Try to upgrade a system with insufficient space.
2. Reboot & make space
3. Retry the upgrage
  
Actual results:


Expected results:


Additional info:

The problem is that once the upgrade is underway, the file 
'/etc/modprobe.conf' is renamed on the target system to allow
anaconda to build/install a new one.  If the upgrade fails, then
this file is left missing which gives the upgrade tool fits the
next time around.

Once I figured this out, I booted the extant system and copied the
saved version.  Restarting the upgrage process then succeeded.