Backup and Restore
NTFS
reimage.
system image
drive image
Drive image
Drive Image
Boot volume
Basically the system volume is required to start up, and the boot volume contains the OS. From http://support.microsoft.com/kb/314470: The system volume refers to the disk volume that contains the hardware-specific files that are needed to start Windows, such as Ntldr, Boot.ini, and Ntdetect.com. On computers that are running the Intel x86 line of CPU processors and later versions, the system volume must be a primary volume that is marked as active. This requirement can be fulfilled on any drive on the computer that the system BIOS searches when the operating system starts. The system volume can be the same volume as the boot volume. However, this configuration is not required. The boot volume refers to the disk volume that contains the Windows operating system files and the supporting files. By default, the Windows operating system files are in the WINDOWS folder, and the supporting files are in the WINDOWS\System32 folder. The boot volume can be the same volume as the system volume. However, this configuration is not required. There is only one system volume. However, there is one boot volume for each operating system in a multiboot system."
NTFS
NT FILE SYSTEM (ntfs)
The current time and A volume control
Yes, you can. You will need to partition your hard drive because Linux has to be installed in a separate volume. I would install windows first and then Ubuntu.