Yes they are, although you can get external hard drives that are separate.
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Hard Drive
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Hard disk
a hard disk is a disk inside the hard drive that stores information. A computer's hard disk, or hard drive, is not a part of or mounted on the motherboard, or any of the computer's circuit boards. The drive is installed into some part of the frame within the computer. Its location is not important, because the user does not have to physically access the drive. The hard drive does, however, have a data connection to the motherboard, over which information is transferred to and from the drive.
Base casting is mounted on the bottom of a hard drive disk unit. It is part of the intelligent circuit board that is wired there.
It doesn't stand for anything. It's a component/s inside your Hard Disk Drive (HDD). When you save data or install programs on your computer, the information is typically written to your Hard Disk. The Hard Disk is a spindle of magnetic disks called platters. The Hard Disk is housed inside the Hard Drive, which reads and writes data to the disk.
Ferrite or cobaltite crystals are within a hard disk.
drive is the partition on your hard disk - c:, d: etc are examples. softwares & files are stored in directories which are stored inside the drives of a hard disk. the hard disk is physical, partitions / drives as they are commonly called are virtual bifurcations on your physical drive, where softwares of files are stored in directories for ease of access to particular information.
how to rectify samsung hard disk. detect BIOS don't detect another system for slave hard disk. then, not installed os.
No, it is an optical disc. A hard disk is defined as a device that stores data on spinning magnetic platters. Although a CD is 'hard' (rigid) as opposed to the flexible inside of a floppy disk, that does not classify it as a hard disk.
Partition the disk.
A file system allows the operating system to store and organize files on a hard disk.