I had my old HP laptop configured for dual booting either Windows XP or Ubuntu (ver. 11.04). I upgraded the Windows installation to Win-7, which boots fine, but I've lost the ability to boot Ubuntu. Its pretty clear that Windows just went ahead and overwrote the boot record, but I don't know how to restore the dual boot. The pre-existing boot manager was the legacy version of Grub, which I was perfectly satisfied with, although I realize the world has moved on to Grub 2.