Hi All, I had a few 320gb sata drives that had OS X on them. Before that they were Windows for testing. I put them in an IBM eServer 335 and now trying to install CentOS 5.3 I get to the partition -> Create custom. I take sda and create a swap and a software raid partition. Same with sdb I then click Raid, mount at / and Raid1 (Mirroring) I try to proceed and I get: boot partition is on a disk using GPT partitioning scheme but this machine cannot boot using GPT. I have never seen this before. Advice? -Jason