Yes in fact most do. While there is new SSD(solid state drive) technology, standard hard drives still have disks. An SSD is extremely fast and efficient but more expensive.
GPT (GUID Partition Table)-This partition style is recommended for disks larger than 2TB, or disks that are used in Itanium computers. (Server 2008 textbook)
Redundant Array of Independent Disks OR Redundant Array of Inexpensive Disks See link below
Before Floppy disks were available, people still transferred data. It used to be with help of punch cards, reel to reel tapes, and cassette tapes. The early home computers used cassette tapes.
Floppy disks are rarely used today, mainly due to the fact that they are obsolete. Flash drives, hard disk drives, and memory cards all take the role of floppy disks in a more simple fashion.
magnets
Yes - the very first personal computers used 8 inch floppy disks for data storage. Advances in technology reduced them to 51/4 inch disks, and further to 31/2 inch disks. Subsequent development came up with the CD-ROM and later the DVD-ROM. See the comparison of the different size disks in the related link.
Basic disks and dynamic disks are two types of hard disk configurations in Windows. Most personal computers are configured as basic disks, which are the simplest to manage. Dynamic disks can make use of multiple hard disks within a computer to duplicate data for increased performance and reliability.
Floppy disks are not normally used on computers anymore, they are an obsolete media.
we have to be careful when sharing floppy disks with friends because as you know floppy disks are used for transferring small files between computers it might lead copy of small files and spread of viruses.
IBM invented the floppy about 1971 for loading microcode into their System/370 computers.
magnetic
mass