Title: 7. Understanding MS-DOS Startup Tasks
Course: IN 2005 Digital Forensics > Section: Module 6: Chapter 6 - Working with Windows and DOS Systems

Understanding MS-DOS Startup Tasks

1. The following two files used to configure MS-DOS at startup:
  - Config.sys
  - Autoexec.bat
2. IO.sys is the first file loaded after the ROM bootstrap loader finds the disk drive. Msdos.sys is the second program to load into RAM immediately after IO.sys.  It looks for the Config.sys file to configure device drivers and other settings.
3. Msdos.sys then loads Command.com, and as the loading of Command.com nears completion, Msdos.sys looks for and loads Autoexec.bat.

Other Disk Operating Systems

1. Some other operating systems:
  - Control Program for Microprocessors (CP/M)
  - Digital Research Disk Operating System (DR-DOS)
  - Personal Computer Disk Operating System (PC-DOS)