Importance

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Abstract

A computer sharing system which adapts a computer's hardware resources to providing virtual dual system operation for several non-concurrent system users. A separate hard disk drive including a full complement of boot, operating system, program and data file software is provided for each of the non-concurrent system users. Access by one system user to another system user's hard disk drive and attendant files is absolutely denied thereby preventing corruption of one user's hard disk dive files by another user's carelessness or malicious intent, or through unique setup adaptation of one user's program files which may otherwise interact with and impose unwanted changes on another's program file's operational performance. Each of the separate hard disk drives may be uniquely formatted to service totally different operating systems, including boot track code, in support of various operating systems including MS-DOS, Windows-NT, OS/2, Unix and others. By definition, each separate hard disk drive may be a physically distinct hard disk drive unit, or be more economically embodied as several separately utilized media platters driven by a common hard disk drive mechanisim and having user distinctive READ and WRITE channel control for each media platter. The absolute denial of a system user's access to another system user's assigned hard disk drive may be cracked open to an limited extent whereby READ-ONLY access may be permitted. Additionally, a third hard disk drive may be enabled to be shared by one or more system users in any combination of READ-ONLY, and READ and WRITE modes. My objective is to deliver the independent performance which until now was proffered only by two completly separate computers in the economic form of one set of computer hardware offering at least two virtually separate operating systems and sets of supporting software whereby one system user is absolutely blocked from corrupting another system user's uniquely configured software and data files.

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First Claim