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It is the same as a laptop hard drive
Because when the hard drive is formatted it has less than its original capacity, same as on a PC or Mac hard drive.
yes, hard drive use around the same amount of power no matter how much disk capacity
The hard drive on a laptop is the same thing as the hard drive in a desktop, only smaller in size. The hard drive stores all your documents, music, videos and software.
They are the same thing. C: is what the computer's operating system calls the hard drive.
Yes.
Laptop hard drives are very similar to desktop hard drives, indeed they work in exactly the same way and even use the same interfaces. However laptop hard drives are designed to be much smaller (2 inches as opposed to 3.5) and draw less power than desktop hard drives. As a result laptop hard drives are usually much slower in terms of data transfer and have much smaller storage capacity than a desktop hard drive of the same year manufacture. With an adapter it is possible to use a laptop hard drive in a desktop computer, and if mounted externally it is also possible to use a desktop hard drive on a laptop.
An external drive is the same as an internal drive just not installed inside the case. Meaning you can use it in exactly the same way as an internal drive. A backup drive is usually a zip drive designed to back up you hard drive and isn't used as a hard drive itself. It is usually in the form simalar to a floppy disk that the backup information is copied to. You can then use the backup disk and drive to reinstall all of your information from your original hard drive back to the hard drive in case of a virus or manually removing something that was needed for the system to run.
A serial hard drive is the same as a SATA hard drive. SATA is Serial ATA, and PATA is Parallel ATA.
yes. pata and ide are the same thing.
Generally speaking yes, but consider that hard drives can be either internal or external. It's like asking "Is the apple the same as the fruit?"
As far as they are both of same physical size and share interface. Also your laptop hardware must support the capacity too.