MS-DOS

make systemdoc ro

The POST (Power On Self Test).

Format:

ATTRIB (+ or - H R S A) DRIVE:\PATH\File.ext

+ Sets an attribute

- Removes an attribute

H = Hidden

R = Read-Only

S = System

A = Archive

MS DOS or DOS was originally created by Mac (apple) and it was used

in various applications. It was bought and owned by Microsoft for $9,000,000 early 90s.

To copy directory, you need to run xcopy command.. You can not copy directory with copy command..

xcopy c:\*.* /s/e a:\

This will copy entire contents to A drive..

Example 1 1. @echo off
2. set /p answer=Do you wish to continue? (Y/N):
3. pause
4. cls
Open Notepad and enter this in, then save it as "test.bat". Then open it and it will work like a charm.


Example 2 If your looking for something more of a challenge, and more advanced try this one. 1. @echo off
2. :start
3. cls
4. set /p answer=Do you wish to continue? (Y/N):
5.
6. if %answer% == Y goto G
7. if %answer% == y goto G
8. if %answer% == N goto H
9. if %answer% == n goto H
10.
11. :G
12. cls
13. echo Alright let's continue!
14. pause>nul
15. goto start
16.
17. :H
18. cls
19. echo Alright don't continue...
20. pause>nul
21. goto start
Open Notepad and enter this in, then save it as "test.bat". Then open it and it will work like a charm.

You can recover your file by undelete command:

undelete <filename>

This is used to load as much of MS-DOS as possible above the 640k barrier. This leaves as much free conventional RAM for older programs as possible.

A move command is simply a copy command which deletes the original once it's finished.

FILE* f

f = fopen ("file name", "br");

... fread (f, ...);

fclose (f);

MS-DOS was not designed for networking, and doses not come with any tools to do so by default.

Neither one of them is a "language translator."

Go to the root directory of the drive (eg c:\), then type: dir <filename> /s For example, to search for the file fred.doc, you would type: dir fred.doc /s Adding /s to the dir makes dos search all the subfolders, so starting in the root directory makes dos search the entire disk.

Open the command window by Start -> Run -> cmd You'll find the application's window sitting on the task bar. Right click on it and you'll find the option Properties. Select it and you'll find all the possible options to change the color of textas well as the background.

Dos files are the files with the extension .bat which are used for programming in DOS. This is also called as batch file programming.

Windows 1.0

BIOS is the basic input output system provides a routine procedure, and use a program written in BIOS features simple, readable, and easy to transplant.

PC-DOS is the most important operating system, as it includes nearly a BIOSdevice management, directory management and file management procedures, is a fully featured, easy to use collection of the interrupt routine. Using the DOS operatingusing the appropriate functions of the BIOS than the operation more simple and lessdependent on some of the hardware.

BIOS functions and DOS functions are called by software interrupts. Need tointerrupt the function number before the call into the AH register, handle the function number into the AL register, besides, usually need to register in the CPU to provide specialized call parameters. In general, DOS or BIOS function calls, has the followingbasic steps:

1, the call parameters into the specified register;

2, for the function number, put it into the AH;

3, for sub-function number, put it into the AL;

4, according to interruption of DOS or BIOS interrupt call;

5, check the return parameters are correct.

BIOS and DOS interrupt interrupt the relationship shown in Figure 9.1.

In the memory system, starting from the address 0FE000H 8K ROM (read-only memory) is equipped with a BIOS (Basic Iuput / output System) routine. Reside in theROM BIOS in the PC series of different microprocessors to provide a compatible system POST, boot loader, the main I / O devices and the interface control processfunction modules to handle all system interrupts. Use BIOS calls that bring great convenience to the programmer programming, programmers do not understand the details of hardware operation, the direct use of instruction set parameters, and thencall the BIOS interrupt the sub-function, so programs written using simple BIOSfunction can be Reading is good, and easy to transplant.

DOS (Disk Operating System) is the most important PC, operating system, which isprovided by the floppy or hard disk. Its two DOS BIOS module IBMBIO.COM andIBMDOS.COM the more convenient to use because more and DOS module providesthe necessary tests, the DOS operating the corresponding functions of the BIOS than the use of more simple operation, but the hardware DOS Dependence less.

It doesnt idiot lel :)

1. Type "cmd" at the run command (or open the command prompt) 2. type "format c:" (Or the drive letter you want to find file system eg: "format g:") You will see the file system of drive c: 3. type "n" and press {enter} key (DO NOT PRESS "Y" TO CONTINUE) 4. type "exit". Never use "" qoutation while typing. {} Refers to keyboard keys.

data series

Distributed commands is in management. Management is in charge of organization and distribution of an organization. There are also peer grouped organizations in which all are in charge of distribution of commands.