I have Windows 7 already installed from a long time ago and I have no Windows/update CD. I want to install Linux Mint. I created a partition, formatted it as Ext4 (in Linux), and labeled it E. I got a LiveUSB version of Linux Mint v15 and proceeded to install it to the E partition. I made its start point a backslash (/) and installed Linux. It all worked out except that I still don't see Linux anywhere in the boot menu. it doesn't appear when I spam F12 or when I let the computer decide (in which it just loads Windows, and forget everything else). I use a Toshiba Satellite laptop (x86) and a 32-bit version of Linux Mint. I've heard that Linux Mint 15 should have something called GRUB and it should automatically work (or something like that) after Linux is installed. To be clear, I installed Linux after Windows.
I'm sure I'm asking a very stupid question, but I just figured out what Linux was today. What would I need to do in order to get Linux to be able to dual-boot with Windows, without doing a clean install and changing as little of what I did as possible?
(and yes, I know I did not create a swap space, but I will address that when I get there. I think I am capable of that)