Description of problem:

Tried installing FC3 on a machine (Pentium 4, Northbrige chipset
mother board, Seagatte 120 G HD)
Bios does support LBA 

I had earlies FC1 AND FC2 installed on this machine without any problem.
I did verify the data on CD ROM ..and it's good.

Installaiton starts failing after language selection. It puts out a
dialog titled BUG with a message of probe_partion_for_geom() function
failing. If you select ignore it proceeds and finally core dumps as it
tries to write the partiontable.
if you select cancel, the installation is terminated. 


Version-Release number of selected component (if applicable): FC3


How reproducible: YES


Steps to Reproduce:
1. Start from CDROM (iso image)
2.
3.
  
Actual results:


Expected results:


Additional info:
The following dump was generated by ananconda 
Traceback (most recent call last):
  File "/usr/src/build/475969-i386/install//usr/lib/anaconda/gui.py",
line 1074, in handleRenderCallback
    self.currentWindow.renderCallback()
  File
"/usr/src/build/475969-i386/install//usr/lib/anaconda/iw/progress_gui.py",
line 242, in renderCallback
    self.intf.icw.nextClicked()
  File "/usr/src/build/475969-i386/install//usr/lib/anaconda/gui.py",
line 789, in nextClicked
    self.dispatch.gotoNext()
  File
"/usr/src/build/475969-i386/install//usr/lib/anaconda/dispatch.py",
line 171, in gotoNext
    self.moveStep()
  File
"/usr/src/build/475969-i386/install//usr/lib/anaconda/dispatch.py",
line 239, in moveStep
    rc = apply(func, self.bindArgs(args))
  File
"/usr/src/build/475969-i386/install//usr/lib/anaconda/packages.py",
line 551, in turnOnFilesystems
    diskset.savePartitions ()
  File
"/usr/src/build/475969-i386/install//usr/lib/anaconda/partedUtils.py",
line 715, in savePartitions
    disk.commit()
error: Bug: Assertion (heads > 0) at disk_dos.c:485 in function
probe_partition_for_geom() failed.

Local variables in innermost frame:
self: <partedUtils.DiskSet instance at 0xb751354c>
disk: <PedDisk object at 0xb7ca0ba8>