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.
“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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