Fedora won't boot successfully after installation

[Stefan Frank]

Jeff Vian wrote:
> 
> 
> Stefan Frank wrote:
> 

>>
>> When booting from the installation CD, already, i get the message
>>         unable to read partition table
> 
> 
> This is your first clue you are in trouble.
> 
> Repartition the drive ---  force it to do that.
> 

I zeroed the master boot record (dd if=/dev/zero of=/dev/hda bs=512 
count=1) and wrote a new empty partition table. fdisk gives me the warning

	invalid flag 0x0000 of partition table 4 will be corrected by write

After writing two new linux partitions, the results are the same as 
before. Linux can't properly read the partition table and can't mount 
the filesystems, and the system doesn't boot after installation. With an 
empty partition table, anaconda exits.

Do you have any ideas?