It probably has a partition, which is a way of separating a physical drive into 2 or more logical drives. This is useful is you want to install 2 operating systems, or if you want your operating system on one drive and your data on the other.
No volts need a hard drive. However hard drives need a voltage. Usually about 5 for the data more for the physical movement of the drive.
The first two floppy drives, if present, are A: and B:. Then, the first active partition on the first hard drive is C: If there is a second physical hard drive, it would be D: ... additional partitions on the hard drives, if active, would get letters after that. The optical drive is normally lettered after the last hard drive partition. So, if you have a computer with 1 floppy, one hard drive with a single partition, and a CD Rom drive, the floppy would be A:, the hard drive would be C:, and the CDRom would be D: In more recent operating systems, however, you can re-arrange drive letters using the storage management tool; but the above is the "normal" arrangement.
physical memory is the actual sticks of memory that you put inside your computer. it is generally faster than logical memory. logical memory is similar to physical memory except imagine all the data on the memory chips on a file in your hard drive. it is usually much slower than physical memory, and it can even damage your hard drive if used in excess. (read/write times increase so the hard drive disk heads have to move faster/more often which puts more wear and tear on the hard drive)
Each disk partition, regardless of whether there are more than one physical drives in the system, is given a drive letter.
Drive letters are merely an abstraction provided by the operating system to make it easier to identify specific hard drives. Indeed, the name "drive letter" is a actually a misnomer because it is the partitions upon the hard drive that are identified by those letters, not the hard drive itself. That is, a single hard drive may be divided into one or more partitions, each of which is assigned a drive letter. By default, drives a and b are reserved for floppy disk drives while the primary partition of the first hard drive is assigned drive letter C. Early versions of Windows had to be installed on partition C, however later versions could be installed on any partition. Not all operating systems use drive letters which are predominantly a feature of Windows operating systems and DOS-based systems. Linux and other Unix-based systems use a more precise identifier whereby drives are identified by labels such as hda2, sdb1 or fda0. The first two letters are an acronym that describes the type of drive, such as hd (IDE hard-disk), sd (SATA drive or, generally, a SCSI drive) and fd (floppy drive). Physical drives of the same type are then labelled a, b, c and so on, and the partitions upon those drives are numbered 0, 1, 2 and so on. Thus the label "hda2" refers to the third partition of the first IDE hard-drive.
When you partition a hard drive into two or more partitions (storage areas) those extra drives are called logical drives. So you can have 2 or 3 or more logical drives on one physical hard drive. It varies.
To get more information on hard drive recovery for a hard drive crash, you might want to look into www.salvagedata.com as they specialize in hard drive recovery for iso systems.
No the more sorter computer you have the more G.B. you have
having BIGGER Hard Drive means you can store more porn on it
A 1TB drive has aprox. 1000GB of memory. So 1TB has 250GB more memory than any 750GB drive.
Your hard drive will be more prone to be broken. Reformatting hard drive needs not to be very often. Hard drive is reformatted once there is no more chances of recovering it from corrupted files, virus, bad sectors, etc. When you format your hard drive, you will certainly feel that your computer is slowing down due to the hard drive being read uncomfortable for the system and later on your hard drive will be broken.
Generally, you can't change the amount of space on a hard drive. You can organize it so it compresses data, but to get more actual memory, you have to get a new hard drive, with more capacity.