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A hard disk drive failure occurs when a hard disk drive malfunctions and the stored information cannot be accessed with a properly configured computer. A hard disk failure may occur in the course of normal operation, or due to an external factor such as exposure to fire or water or high magnetic fields , or suffering a sharp impact or ...
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A WDTLER.EXE utility allows the enabling or disabling of the TLER parameter on Western Digital hard drives. This utility is written for DOS. The utility works on and makes changes to all compatible Western Digital hard disk drives connected to the computer. The change survives power-cycling. Western Digital used to mention the tool in an FAQ. [12]
The Hard Disk 20 (or HD20, as it was known colloquially) contains a 20 MB 3.5" Rodime hard disk which provides over 50 times the data storage of the stock 400 kB disk drive. At the time when the average file size was around 10-20 kB and due to the vast number of those files the HD20 can contain, Apple's original Macintosh File System , which ...
The bomb symbol is not used in Mac OS X, but a test application called Bomb.app, specifically written to cause a non-fatal crash, is included with Xcode and uses a rendition of the bomb symbol as its icon.
The Macintosh can only support one external drive, limiting the number of floppy disks mounted at once to two, but both Apple and third party manufacturers developed external hard drives that connected to the Mac's floppy disk port, which had pass-through ports to accommodate daisy-chaining the external disk drive. Apple's Hard Disk 20 can ...
A checksum of a message is a modular arithmetic sum of message code words of a fixed word length (e.g., byte values). The sum may be negated by means of a ones'-complement operation prior to transmission to detect unintentional all-zero messages. Checksum schemes include parity bits, check digits, and longitudinal redundancy checks.
In addition, an external floppy disk drive may also be connected, making the SE the only Macintosh besides the Macintosh Portable which could support three floppy drives, though its increased storage, RAM capacity and optional internal hard drive rendered the external drives less of a necessity than for its predecessors. Single-floppy SE models ...