One of my friends told me about this problem:
He had XP SP3 and wanted to install Win7 on another partition. XP was on Drive C, and ‘I’ was destined to be where he wanted Win 7 to go. But while installing, he put the Win7 disc in the drive, and restarted the machine… He allowed the computer to boot into the disc. What happened was, Win7 was installed alright, but he didn’t get a dual boot system. The boot selection menu doesn’t show up, and the computer boots into Win7 automatically. It became the default OS. And ‘I’ was renames as ‘C’.
The original C drive and its contents are still there intact, only it got a new Drive letter, ‘D’.
What can he do to get things normal again? Much thanks.