Hi guys, I have Pentium D 805 CPU i have 2 HDDS - IDE - 40 GB - 4 Partitions - C, D, E, F SATA - 80 GB - 2 Partitions - I, J My IDE Drive's C: partition is the Active one. C - Windows XP SP3 D, E, F - Data I - data J - Windows Vista SP1 Now, i have windows WIM image of Win2003 SP2 which works fine in Virtual Box i booted the pc with PE2 disc and applied the Win2003SP2 wim to I:\ drive and added the entries of windows 2003 parition in boot.ini of C drive... and also replaced the ntdetect.com and ntldr from xp ones to win2003sp2 ones now when i boot xp boots fine, but when i select win 2003 option after 2-3 seconds it restarts. What may be the problem? Help guys.