Hi, Spiceagent11,
As I said to Dencorso at post 3, "I was really surprised when I first noticed it. By simply installing Windows 7 in a free space (never if you install it into an existing primary partition), it creates a hidden active primary partition 0 which behaves just as grub did, and it is thanks to it that, using partition 1 or 2 you can format the other one and rebuild it by a simple copy/paste procedure, using a file manager which allows you to see and copy hidden and system files."
You can also use this grublike partition to run Linux, as explained into the tutorial.
Greetings