Hi Ive just purchest a second SATA drive, so ive got 160 gig SATA as system disk. and 80 gig SATA clone of system disk. my old config was a sata to pata, so i could go into bios and boot from ether one. Now with both disks conected (two SATA's) the option in my bios is still there disable one boot from other, but when i disable the 160 gig sata and enable the 80 gig sata (clone) when i boot into windows it will only boot with the 160 gig sata system disk not the clone. I now how to fix the MBR but i cant use it till i can boot from the clone.