The Macintosh Hard Disk 20 is the first hard drive developed by Apple Computer specifically for use with the Macintosh 512K. Introduced on September 17...

A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using...

Hard Disk Sentinel (HDSentinel) is a computer hard disk drive-monitoring software for Windows, Linux and DOS operating systems. Hard Disk Sentinel was...

engineers at IBM's San Jose California laboratory invented the hard disk drive. The disk drive created a new level in the computer data hierarchy, then...

A hard disk drive platter or hard disk is the circular magnetic disk on which digital data is stored in a hard disk drive. The rigid nature of the platters...

The Apple Hard Disk 20SC is Apple's first SCSI based hard drive for the Apple II family as well as the Macintosh and other third party computers using...

Hard disk drives are accessed over one of a number of bus types, including parallel ATA (PATA, also called IDE or EIDE; described before the introduction...

A hard disk drive failure occurs when a hard disk drive malfunctions and the stored information cannot be accessed with a properly configured computer...

magnetic disk storage devices from 1956 to 2003, when it sold its hard disk drive business to Hitachi. Both the hard disk drive (HDD) and floppy disk drive...

At least 218 companies have manufactured hard disk drives (HDDs) since 1956. Most of that industry has vanished through bankruptcy or mergers and acquisitions...

Higher performance in hard disk drives comes from devices which have better performance characteristics. These performance characteristics can be grouped...

rotating disk drive capacity is much smaller,[citation needed] with 100 TB available in 2018[update], and 32 TB for 2.5-inch. IBM's first hard drive, the...

mechanical changes to the disk's surface layer. A disk drive is a device implementing such a storage mechanism. Notable types are hard disk drives (HDD), containing...

computer storage, a disk buffer (often ambiguously called a disk cache or a cache buffer) is the embedded memory in a hard disk drive (HDD) or solid-state...

the external disk drive. Apple's Hard Disk 20 can accommodate an additional daisy-chained hard drive as well as an external floppy disk. 3.5-inch single-sided...

The stock 512K could also use an 800 KB floppy disk drive as well as the Hard Disk 20, the first hard disk manufactured by Apple exclusively for use with...

and possibly the CD-ROM. UW-SCSI hard disks are seldom an issue and Apple even released an U-SCSI (but narrow) hard disk installation kit for the ANS even...

gone through a number of changes over the years. In a hard drive, the heads fly above the disk surface with clearance of as little as 3 nanometres. The...

A disk compression software utility increases the amount of information that can be stored on a hard disk drive of given size. Unlike a file compression...

small (20 to 80 megabytes). Hard drives were also rather expensive at the time, costing roughly 10 USD per megabyte. For the users who bought disk compression...

floppy disk or floppy diskette (casually referred to as a floppy, a diskette, or a disk) is a type of disk storage composed of a thin and flexible disk of...

The ProFile (codenamed Pippin) is the first hard disk drive produced by Apple Computer, initially for use with the Apple III. The original model had a...

for an internal hard drive and it would be over nine months before Apple would offer a SCSI drive replacement for the slow Hard Disk 20. It would be well...

512Ke users' only hard disk option is the slower, floppy-port-based Hard Disk 20, or similar products for the serial port, even though the 512Ke ROMs...

and Macintosh XL along with $1,495 US for the new Macintosh Plus and Hard Disk 20 (list price of $4,098 US). After Apple dropped the XL from their price...

Macintosh with an internal drive bay for a hard disk (originally 20 MB or 40 MB) or a second floppy disk drive. First compact Macintosh to feature an...

five-megabyte hard drive. It was affected by its high price, insufficient software, unreliable FileWare (codename Twiggy) floppy disks, and the imminent...

Apple's external 800 KB drive with the Hierarchical File System or Apple's Hard Disk 20. A Mac 128K that has been upgraded with the newer 128 KB ROM (called...

ejecting disk volumes (including both hard disks, removable media, and disk volume images) Enabling or disabling journaling Verifying a disk's integrity...

Rodime produced the hard disks used in Apple Computer's first external hard drive for the Macintosh, the Macintosh Hard Disk 20, which connected to the...