What isOS/360

Learn about the history and evolution of OS/360, which was released in 1964 as the operating system for IBM System/360. OS/360 was later upgraded to OS/MVT and OS/MFT for supporting variable and fixed programme sizes respectively. These were further improved for virtual storage and renamed as OS/VS1 and OS/VS2. Ultimately, MVS was developed from OS/VS2.

Main Points:

  • OS/360 was the first operating system for IBM System/360
  • OS/MVT and OS/MFT were its two variants, supporting variable and fixed programme sizes respectively
  • They were later updated for virtual storage and renamed as OS/VS1 and OS/VS2
  • MVS was the ultimate development from OS/VS2

Frequently Asked Questions

What is OS/360?

OS/360 is an operating system developed by IBM for their System/360 mainframe computers, and was released in 1964. It was later upgraded to support variable and fixed programme sizes and renamed as OS/MVT and OS/MFT respectively. These were further improved for virtual storage and renamed as OS/VS1 and OS/VS2.

What is the history of OS/360?

OS/360 was released in 1964 as the operating system for IBM System/360. It was later upgraded to OS/MVT and OS/MFT for supporting variable and fixed programme sizes respectively. These were further improved for virtual storage and renamed as OS/VS1 and OS/VS2. Ultimately, MVS was developed from OS/VS2.

What is MVS?

MVS (Multiple Virtual Storage) is an operating system that was developed from OS/VS2 by IBM. It was designed for their System/370 and System/390 mainframe computers, and was widely used in the 1980s and 1990s.

Final Thoughts

OS/360 was a pioneering operating system developed by IBM for their System/360 mainframe computers in 1964. Its evolution into OS/MVT, OS/MFT, OS/VS1, OS/VS2 and finally MVS laid the foundation for modern operating systems and greatly impacted the history of computing.

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