System broken after upgrade to kernel-3.3.2-1.fc16.i686

[Jonathan Ryshpan <jonrysh@xxxxxxxxxxx>]

I have just upgraded two systems to kernel-3.3.2-1.  One system (x86_64 hardware) upgraded flawlessly.  The other (i686 hardware) now won't boot.  The grub menu comes up allowing me to choose between: 
    kernel-3.3.2-1.f16.i686   -- which fails (see below)
    kernel-3.3.0-0.f16.i686   -- which works
When I choose kernel-3.3.2-1, there is what seems like an exceptionally long pause, the system briefly displays some garbage, and then these messages appear:

>     dracut warning no root device "block:/dev/disk/by-uuid/2d...af"  found
>     
>     dracut warning no root device "block:/dev/disk/by-uuid/2d...af"  found
>     
>     dropping to debug shell
>     
>     sh: 0 can't access tty:  job control turned off
>     
>     dracut:/#

In fact, as blkid shows the device (partition) that the system appears to be looking for is not there.  However all the partitions that should be on the system are there, including the partition that is normally mounted on /boot.  Which must be so, since the previous kernel starts OK.

Questions:

1. What's going on here?
2. How can I fix it?
3. How can I prevent this in the future?

Many thanks - jon




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