I have windows 7 in my system, but i want install windows XP in parallel with windows 7 (Windows 7 and XP as dual boot). I have created a new partition using disk management with NTFS. But when i try to install XP after accepting license, i am unable to see the partition, even i am unable to see the unallocated space after i free the space in disk management. i have also checked in bios , it is marked as ATA , i am installing both Operating Systems in a single HDD. Please help.