Computer Operating Systems

1.    OTX orientation

2.    Continue review of DOS commands and Chapter 3 concepts.
      (See http://www.software-recovery.com/fat_recovery.htm for a good explanation
      and picture of the file structure on FAT-based hard drives.)

      ATTRIB command can be used to reset archive (backup status), read-only and system attributes of a file.
                       (See DOS Exercise sheet, 17-19)
      SYS         command can be used to make a floppy or hard disk partition bootable under MS-DOS command-line
                      included with Windows 9.x.
      SCANDISK  used to check/repair disk file system (floppy or hard drive) under Windows 9.x
      CHKDSK    used to check/repair disk file system (floppy or hard drive) under MS-DOS 6 and Windows 
                           NT/2000/XP
      SCANREG   used to check/repair system registry under Windows 9.x
      DEFRAG      used to defragment floppy or hard disk partition under Windows 9.x/2000/XP
      VER               displays OS version|
      EXTRACT    extracts single files or a group of files from a Windows cabinet (CAB) file.
      DEBUG         used to display system-level information in RAM or on disk.

Already discussed:
      FORMAT
      FDISK
      EDIT

3.   Continue working on DOS Exercise sheet in the A+ Lab
      Exercises 14-16: Where did the missing 256K of conventional memory go after you loaded the device
                                   drivers in the CONFIG.SYS you created? ___________________________
      Exercises 17-19:
      When we use the ATTRIB command to unhide the MSDOS.SYS and IO.SYS files, they can be deleted
      from a bootable disk (either a hard drive or floppy). When we delete the IO.SYS file, a boot drive is no longer
      bootable.   In these exercises, you discover that, and then restore the file to your boot drive.

      Exercise 20:    We change the parameters that load the RAMDRIVE.SYS driver in CONFIG.SYS, with
                               a corresponding shift in conventional/extended memory resources.

Homework:

Work on or complete the DOS Exercise Sheet
Study for  Chapter 3 Quiz!
Review A+ in Depth, Chapter 4,  p. 125-152. Write out answers to questions 1-6 on p. 172-173