MS – DOS History Full Details

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History of MS – DOS

MS – DOS History : In August 1981, IBM released its first particular computer, the IBM PC, which came with the 16- bit Microsoft MS- DOS1.0 operating system.

This is Microsoft’s first operating system and it’s the most habituated zilches worldwide.

MS QDOS( Quick and Dirty Operating System) was renamed DOS1.0, which Microsoft bought from Seattle.

QDOS was developed as a clone of the eight- bit CP/ M operating system to be compatible with the most popular business operations in use at the time.
Wordstar and dBase were the most habituated operations at the time. The program for CP/ M( Control Program for Microcomputers) was written by Gary Kildal.

The QDOS program was written by Tim Peterson, who was an hand of Seattle Computer Products Company.
Learn Further about the history of DOS.

MS - DOS History

1973 This was the time Gary Kildall wrote a simple operating system in the PL/ M language. He named it CP/ M, the full form of which is Control Program/ Monotor( Control Program for a Microcomputer).
1979 2 major performances were released this time.

Apple Computer released DOS3.2 in February.
Apple Computer released interpretation3.2.1 of DOS.
1980 In the month of April, Tim Peterson began writing a computer( 16- bit Intel 8086 CPU) 8086- grounded operating system for Seattle Computer Products.

When Digital Research delayed the release of the CP/ M 86 operating system, SustainLuckputerProducts decided to produce its own fragment operating system.
QDOS was developed as a CP/ M clone to work with business operations of the time similar as Wordstar and dBase.

Gary Kildall, who worked at Digital Research, wrote CP/M (Control program for Microcomputer) 7 years ago and it was the first operating system that was in general use.

Seattle Computer Products created QDOS 0.10 (Quick and Dirty Operating System) in August.

DOS 1.0 written by Peterson was a program written on 4000 lines. It took about 6 weeks to write. The QDOS program was slightly different from the CP/M program.

MS - DOS History

Later, Microsoft hired Peterson. It took very little time to create this operating system, yet it did a very good job.

In September, Tim Peterson showed Microsoft his 86-DOS program he had written for the 8086 chip.

In December, Seattle Computer Products renamed QDOS 86-DOS and released it as version 0.3.

Microsoft also purchased non-exclusive marketing rights for 86-DOS.

1981: First run in a prototype IBM microcomputer in February. In July of that year, Microsoft bought the full rights to DOS from Seattle Computer, also named MS-DOS.

The very next month, IBM released the IBM 5150 PC, which had a 4.77 MHz Intel 8088 CPU, 64 KB of RAM, 40 KB of ROM, a 5.25-inch floppy disk drive, and PC-DOS, which cost $3,000. design, it was an improved version of QDOS.

1982: In the month of May, Microsoft released its version 1.1 for the IBM PC. It supported double-sided floppy drives.

Then Microsoft released version 1.25, which was similar to version 1.1 created for IBM compatible computers.

1983: MS-DOS 2.0 was released in March, which was rewritten with scratch and supported 10 MB hard drives and 360 KB floppy drives.

1984: DOS 2.1 released for IBM computers.

1986: Microsoft launched version DOS 3.2, which supported 3.5-inch and 720 Kb floppy drives. John Socha released version 1.0 of Norton Commander this year.

MS - DOS History

1987: IBM released Disk Operating System version 3.3 for $120.

1988: Digital Research changed CP/M to DR DOS. Microsoft also launched a graphical/mouse interface along with Disk Operating System 4.0. This version was not successful.

1989: John Socha releases Norton Commander 3.0. By this time, the application market for disk operating systems had matured.

1990: This year, Microsoft released the Russian version of Microsoft Soft Disk Operating System 4.01 for Russia in the Soviet market. Fewer features have been provided in this version 3.3.

1991: Disk Operating System 5.0 was released in June, replacing the most commonly used major version of DOS 3.3. In this, the device full screen editor, restore and unformat were also given.

1993: Microsoft upgraded the disk operating system to version 6.0 this year with Double Space Disk Compression.

Within 40 days of its launch, 1 million copies of this version were sold on the market.

1994: 6.21 was released in February. Due to the lawsuit, the double spatial disc compression was removed from it.

Then Disk Option System 6.22 was released, in which disk compression was restored in the name of Drive Space.

1995: IBM introduced PC Disk Operation System 7 in February, which introduced integrated data compression and was provided by Stack Electronics, then Microsoft released Disk Operating System 7, which was included with Windows 95.

When Windows was running, it was developed to support long file names.

1997: Microsoft released version 7.1. 95 and was part of OEM service version 2.

It was able to support ddrive FAT 32 hard disk and was able to provide efficient as well as large storage capacity.