One.
how many types hard disk drives
To get hard disk drive speeds, one may search through many locations. Most websites that sell hard disk drives will allow one to select multiple hard disk drives to compare and contrast them. Once one has selected the hard disk drives to be compared, one can look for speeds offered. In addition, there are many websites that are devoted to the latest and greatest in technology and some of these have comparisons between the different hard disk drives.
You have no hard drives listed. You have the ability to assign any drive letter (except the Main 'C' ) to your hard drives using "Computer Management"
Use windows Explorer and see how many drives there are starting at C
Yes, most hard drives are rewritable. SSD drives can be rewritten to less times than conventional drives, but that is still many times. The OS deletes from hard drives and makes new files all the time. If the hard disk was not reusable, then everyone would be buying them more often, and they would be more easily accessible from the outside of the computer.
Windows XP has no hard limitation on the number of hard drives, or at least none that has been published. With the way it handles disk drives, it is far more likely you'll run out of space to put the hard drives before you hit any other limit.
As many as needed. In laptops/notebooks there is usually only one hard disk. In a desktop or server there could be potentially any number of disk drives. If you mean a CD/DVD drive the same applies.
It depends on how many usb slots are there in our pc case.
The largest capacity hard disk drive that is commercially available is four terabytes. It can be purchased at many websites online, as the internet is filled with a variety of options, giving the buyer numerous choices.
"A" and "B" are typically diskette drives. Many modern computers don't use diskettes any more, but the letters are still reserved. "C" is typically the first hard disk, or the first partition. "D" can be just about anything - it may be unassigned, it may be a second hard disk, a second partition on the first hard disk, a CD or DVD drive, or a USB drive.
Reviews for specific disk drives (including 1TB drives) can be found on the major online retailer sites. Amazon an NewEgg both have many user reviews of most 1TB hard drives.
There are many brands and makes of hard disks from many manufacturers, so there are new hard drives coming out all the time which make incremental improvements over older generations of hard drives. The newest most fundamentally different kind of hard drives are called SSD drives, which do not use any disks at all, and work the same way that USB Flash Drives and the memory cards in Digital Cameras work. See... http://en.wikipedia.org/wiki/Solid-state_drive