Definition: Generic term for hard-disk drive based on IBM's 30/30 drives. You really don't need to know this But I bet this is all you remember. The Winchester is associative slang from IBM's unthinking designation of its 30MB discs as the 30/30. As every schoolboy used to know, that's the calibre of the Winchester rifle beloved of cowboys (and Injuns). You can guess the rest. Unfortunately, the only people who talk about Winchesters meaning disk drives have grey hair, if any, and are about to, err, go the way of the Winchester itself.

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