This IBM storage box holds a copy of the Disk Operating System instruction manual and software diskettes for the IBM branded version of Microsoft’s MS-DOS, version 2.10. Early in 1983, IBM released IBM PC DOS version 2.0, a completely rewritten microcomputer operating system that included support for hard disks and at the same time, introduced the subdirectory-based file system. Version 2.10, released in September 1983 with the new IBM PCjr, not only fixed several bugs but supported all IBM PC models.
References:
“IBM Disk Operating System” version 2.10 instruction manual.
“PC Mag,” July 10, 1984.
“Byte,” November 1983, Vol 8, No. 11, p. 293.
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