I installed Ubuntu on an older Vista Dell computer (AMD) partitioned for three logical drives and one additional physical drive (1) from a defunct machine for storage use only. I created a 26 G empty area on the primary drive (0) for the Ubuntu install. Things went well except that although I chose “alongside” the dual boot menu never appeared and machine boots to Ubuntu all the time. The C: partition with the Vista OS is ok and I can even access it with Ubuntu and move files with no problems. I want that dual boot feature on my network where the machine is configured with Vista to cohabit with five other machines. I have trouble with configuring Ubuntu into the network for two unrelated reasons.
Actually, I really want to be able to boot to C: drive in Vista occasionally and despite my growing admiration for Ubuntu, I still want to be able to revert (on that machine) to Windows.
My question is how do I go about getting that dual boot feature now without putting my successful Ubuntu installation at risk. I've done lots of tweaking on it and would hate to lose it. I suspect that what might have happened ??? is that the Ubuntu install selected the (1) drive for the dual boot instead of the (0) drive. Being an old (really old) computer tech I have a sad history of messing with master boot records and hate to get into that again. Besides, I only understand hardware and leave software for smarter fellows.
I had already reinstalled after removing the extra (1) drive to avoid confusing the install wizard.