It's called "dual boot". You certainly can set up additional partitions and install a boot-loader to pick which way you want the computer to load. You aren't even limited to Microsoft products, in fact LINUX offers bootloaders that will allow you to include quite a few boot options.
Before you try to do that, Back up your XP, then defrag the disk, then you can use disk partition software to change the size of the Windows partition or you can just set up an alternate partition on the new drive. You'll have quite a few options.
Install both hard drives, decide which one is designed for xp and which for vista. Boot from xp cd and choose the hard disk you want to install to. After installation of xp finished insert the disk with vista. Run setup.exe, when it asks you about location for future system choose another drive. And follow instructions. Once installation has been completed you will have dual boot.
One can see how much disk space is free on their hard drive in Microsoft Vista using a few simple steps. First, go to the start menu and click on Computer. Next, select the hard drive to view. The disk space information will appear at the bottom of the folder window.
There is a process called disk duplication which is cloning the contents of one hard disk to another. This is done as installing a first computer, creating an image of the hard disk, and cloning the first disk, or its image, to other computers.
Yes, you certainly can. Install Windows Me first on one of the hard drives. And after that install Vista on another hard drive. If you do reversed multiboot will not work. And you will have to edit boot.ini file manually which is not that easy.
Disk cloning is the copying of the contents of one hard disk to another hard disk. In the alternative, a cloning copy can also be saved as an "image" file; a compressed file containing a "snap shot" of the hard drive's contents.
Yes, you can. If your computer has more sata ports you can use then to connect more hard drives.
hard-disk
it is the hard disk
Yes, but the system may not function properly if you hope to boot from that disk. The swapped disk can be a second or third disk on a system, but if you want it to boot from that disk you'll probably need to re-load the OS.
(The following assumes that the hard disk is still in working condition.) If the hard disk is in a computer, you can connect it with another computer over a network, and copy the files over the network. You can also connect the old hard disk to your new computer (using a second hard disk cable); in this case, if you manage to make it work, you can copy the files from one disk to another. In this case, the copying itself should be much faster than copying files over a network.
Usually only one.
A hard disk can be either internal or external and one can use it to save files. The parts of a hard disk are the disk case, spindle, disk platter, actuator and the read-write arm.