Currently Being ModeratedAug 31, 2013 7:00 AM (in response to macojoma)
Welcome to Apple Support Communities
The Mid 2012 MacBook Pro only supports 64-bit Windows 7 and 8 versions > http://support.apple.com/kb/HT5634 That means that Windows XP is not supported on your computer by using Boot Camp.
Instead of installing Windows XP in Boot Camp, install Windows 7 or Windows 8, or install Windows XP on an app like Parallels, VMware Fusion or VirtualBox, so you can run Windows and OS X at the same time. You won't have any performance problem with Windows XP
Currently Being ModeratedAug 31, 2013 7:05 AM (in response to mende1)
thx, but I thought i have to create first 2 partitions after i can install vitual box. So if I understand you correct i do not need to make the partition and could install virtual box immediately. after this I could install windows xp within this virtual box. Correct?
Currently Being ModeratedAug 31, 2013 7:06 AM (in response to macojoma)
Correct. A virtual machine creates a virtual hard drive, so you don't need to make a partition on the hard disk