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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, 1985, it was part of Apple's solution toward completing the Macintosh Office (a suite of integrated business hardware & software) announced in January 1985.
The 20SC originally contained a half height 5.25" Seagate ST-225N 20MB SCSI hard drive, but was later manufactured with a full-height 3.5" MiniScribe 8425SA 20MB SCSI hard drive. The latter drive was the same size as the drive inside the Macintosh Hard Disk 20, but 10 to 15 MB over what had previously been offered by Apple for the II family.
SanDisk Professional sells their external storage devices only to professionals under the product lines G-SPEED, G-RAID, G-SAFE, and G-DRIVE. G-RAID is a line of portable external hard drive products used for field editing and backup for video producers and camera operators .
Internal SuperDrive floppy drive on a Macintosh LC II. The term was first used by Apple Computer in 1988 to refer to their 1.44 MB 3.5 inch floppy drive.This replaced the older 800 KB floppy drive that had been standard in the Macintosh up to then, but remained compatible [citation needed] in that it could continue to read and write both 800 KB (double-sided) and 400 KB (single-sided) floppy ...
A block, a contiguous number of bytes, is the minimum unit of storage that is read from and written to a disk by a disk driver.The earliest disk drives had fixed block sizes (e.g. the IBM 350 disk storage unit (of the late 1950s) block size was 100 six-bit characters) but starting with the 1301 [8] IBM marketed subsystems that featured variable block sizes: a particular track could have blocks ...
Target Disk Mode is the preferred form of old-computer to new-computer interconnect used by Apple's Migration Assistant. Migration Assistant supports Ethernet (wired) or Wi-Fi , which TDM does not. Neither supports USB ; however, Thunderbolt-to-FireWire, Thunderbolt-to-Gigabit-Ethernet, and USB-3.0-to-Gigabit-Ethernet adapters are an option ...
A small, rectangular icon depicting a gray computer emblazoned with a colourful apple logo, and a floppy-disk slot. On its small square screen is a smiley-face emoticon against a lilac background. The icon indicates that the machine has successfully begun booting, in contrast to a "Sad Mac" icon, which displays a "sad" emoticon.
Today the term external storage most commonly applies to those storage devices external to a personal computer. [5] The terms refer to any storage external to the computer. Storage as distinct from memory in the early days of computing was always external to the computer as for example in the punched card devices and media. Today storage ...