No.
Yes, the motherboard does determine what hard drive can be installed. A computer is made for the hard drive to be compatible with whatever mother board is installed.
You can do this very simply using partitions. If you haven't installed Ubuntu yet, Follow the installation instructions and click "Run alongside Windows 7" when prompted. If you already have Ubuntu installed, then it's probably already partitioned.
The second drive can certainly be installed, but the computer will only recognize the boot block of the "C" drive. alternate bootloaders can be installed that take over the boot block, and will allow mutliple Operating Systems.
NO, you need a flash drive for everything.
Yes you can, but games like Halo 3 were made to work best with a hard drive.
Usually it is installed on your HDD (Hard Disk Drive).
There is no hard drive recovery software installed on my computer. Most computers will require this software to be installed by the user. There are many options available for hard drive recovery software.
hard-drive
A person could use the software TrueCrypt or Kakasoft USB security program Or one could buy a flash drive that already has encryption software already installed.
i'm sorry that's not possible. you cant hover the installer program on to a hard disk but not a previously installed program.
It is normally installed to C DRIVE.
you will need a hard drive and invite people.