GPT error while installing CentOs 5.6 in HP DL320 G6
 

Hi ,
i am trying to install CentOS 5.6 in HP DL320 G6 server with 2.86 TB (RAID 5) disk space . while i tried to create the partition i got below error :
"Your boot partition is on a disk using the GPT partitioning scheme but this machine cannot boot using GPT"

after googling i found a solution to use dd before partitioning. i tried that and when i reboot with CENTOS dvd to install i got a warning " Your partition table is not readable and need to remove all data." if i press yes than i got the same GPT error after creating the partition.

Can anybody help me to solve this problem?