DOS is the most popular operating system on personal operating systems and is used by the most people. The most important MS-DOS has developed since the earliest version 1.0 launched in 1981. It has already had many versions, with more and more powerful functions and more practical. The development of its major versions is listed below.
MS-DOS 1.0 was released in 1981. As the operating system of IBM PC, it supports 16K memory and 160K 5-inch floppy disk.
MS-DOS 1.1 corrects many problems in version 1.0 and supports 320K 5-inch floppy disk.
MS-DOS 2.0 was released with IBM XT in 1983, with many commands added and supports 5M hard drives.
MS-DOS 2.1 has added a few features on the basis of 2.0.
MS-DOS 3.0 adds support for new IBM AT hardware and some LAN functions.
MS-DOS 3.1 adds more LAN functionality support.
MS-DOS 3.2 supports 720K 5-inch floppy disk.
MS-DOS 3.3 supports new IBM PS/2 devices and 1.44M 3-inch floppy disks, and supports character sets in other languages.
MS-DOS 4.0 adds the DOSSHELL operating environment, and has some other enhancements and updates.
MS-DOS 5.0 was released in 1991 and has added good memory management and macro functions, enhancing DOSSHELL.
MS-DOS has added graphical interface programs (such as SCANDISK, DEFRAG, MSBACKUP, etc.), added support for 586 computers, disk compression and other functions, and enhanced support for Windows.
MS-DOS 7.0 adds long file names, LBA large hard drive and other functions, enhances support for the new version of Windows, and strengthens some commands.
MS-DOS 7.1 fully supports FAT32 partitions, large hard disks, large memory, etc., and has updated some functions, such as support for four-bit years, and is currently the most practical DOS version.
In addition to MS-DOS, other DOSs are also constantly developing, especially FreeDOS, ROM-DOS, Real/32 DOS, etc. Let us continue to support the development of DOS to make it more powerful and practical!