History of Microsoft DOS
MS-DOS 1.0 was released August, 1981.
MS-DOS 1.25 was released August, 1982.
MS-DOS 2.0 was released March, 1983.
Microsoft introduces MS-DOS 3.0 for the IBM PC AT and MS-DOS 3.1 for networks.
MS-DOS 3.2 was released April, 1986.
MS-DOS 3.3 was released April, 1987.
MS-DOS 4.0 was released July, 1988.
MS-DOS 4.01 was released November, 1988.
MS-DOS 5.0 was released June, 1991.
MS-DOS 6.0 was released August, 1993.
MS-DOS 6.2 was released November, 1993
DOS SYNTAX
SWITCHES= /F /K /N /E[:n]
| /F | Skips the two-second delay after displaying the "Starting MS-DOS" message during startup. |
| /K | Forces an enhanced keyboard to behave like a conventional keyboard. |
| /N | Prevents you from using the F5 or F8 key to bypass startup commands. (SWITCHES /N does not prevent you from pressing CTRL+F5 or CTRL+F8 to bypass Drvspace.bin or Dblspace.bin; to prevent this, use the D**SPACE |
| /SWITCHES | Command to add the SWITCHES /N setting to your D**space.ini file.) |
| /E[:N] | Used without the :n parameter, indicates that Io.sys should suppress the automatic relocation of EBIOS. (Automatic relocation of EBIOS increases the conventional memory available to MS -DOS-based programs.) Suppressing automatic relocation results in less conventional memory available to MS-DOS-based programs. Use the /E switch with the n parameter to relocate N bytes of EBIOS to low memory, where n is the number of bytes to be relocated. The minimum value for n is 48 and the maximum value is 1024. The number specified is always rounded up to the next multiple of 16. |
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