Computer Operating Systems
Urban Voice -- Instructor: Lenny Bailes
Day 10 Agenda
1. Review Day 9 Agenda fill-ins, A+ Chapter 2 concepts,
real mode vs. protected mode, starting applications, answers to questions 6-25, and
chapter 2 vocabulary.
For DOS and Windows 9.x, the three types of logical primary memory are ___________,
_________________, and __________________.
For ROM BIOS and RAM to communicate with the CPU, specific addresses must be assigned
Windows 9.x loads older 16-bit device drivers from _________, __________,
or ___________ to be backward compatible with DOS and Windows 3.x
2. Discuss A+ Chapter 3 concepts
a) A hard/cold boot starts the computer when the user _____________________
b) A warm/soft boot restarts the computer when ________________________
c) _______________________ is a technology that allows a computer's BIOS, motherboard,
or an operating system to automatically detect hardware devices and assign them to IRQs and
FAT File System
d) The FAT in FAT file system stands for ______ __________ _________.
e) The FAT file system divides a floppy disk into concentric circles called ___________. Each of
these circles is divided into segments called ______________.
f) The basic FAT unit used to store files is called a ____________, composed of one or more
g) The newer version of the FAT file system used by default in Windows 98 is called _______.
(This file system allows the disk to contain clusters that use fewer sectors, optimizing the
storage of smaller files on the disk.)
h) The older version of the FAT file system used by MS DOS 6.22 and the original version of
Windows 95 is called _________.
i) Under MS DOS 6.22 (and earlier), filenames are limited to ____ characters that can't include
special symbols or spaces.. Usually ___ characters are used to assign a name and ___
characters are used for a file extension.
j) Under Windows 95 and later versions of Windows, filenames can include spaces and special
characters and may be up to ___ characters in length.
Partitions and Formatting
Unlike a floppy disk, a hard disk (fixed disk) must be divided into one or more partitions, in
order to hold files, programs, or an operating system.
Both floppy and hard disks must be formatted for an operating system to be able to read them.
Most hard disks contain one partition, called a _____________ partition with one logical drive
in it lettered ___. Under Microsoft operating systems, a hard disk may also contain an
__________ partition with additional logical drives.
The computer boot process can be divided into four main steps _______________,
___________________, _________________, ____________________.
3. Finish inventory sheets and disk partitioning in the lab.
a) Use FDISK to create a primary partition that's one-half the size of your disk
b) Reboot the computer and format the partition with the command:
A:\> Format C: (do not use the /S parameter).
c) After the partition is formatted, can DOS read the hard disk now, when you type DIR C:\?
Do you see any files on the disk? ___________
d) After the previous step, reboot the computer from the Win98 Startup Floppy.
In order to load the DOS operating system, the computer must load three files:
_________, __________, and _________. Do you think the computer will boot from the C-drive now, when you remove the Windows 98 Startup disk and restart? ______ Try it
e) You can make the C-drive you've created bootable, by using the SYS command on the
Win98 Startup floppy. Boot the computer from the startup floppy again and issue the
command: A:\> SYS A: C:
f) Remove the Win98 Startup disk and reboot the computer. Does it boot to the C-prompt?
g) Issue the command DIR C:. What file(s) do you see listed? _______________.
The other system files copied to the C-drive by the SYS command are hidden. To
view them, issue the command: DIR C:\ /ah
h) Use the FDISK utility on your Win98 Startup disk to create a D-Drive partition on the hard
disk. This takes two steps.
Choose option ___ on the FDISK menu to create a partition, followed by option __ on the
next menu to create an Extended Partition.
After you've created the Extended partition, create a DOS logical drive inside of the partition
and have it use the remainder of the available space on the drive.
Press ESC to back out of the FDISK menus and exit to the command-prompt. Can the
computer read and recognize your new D-drive yet? ____. What do you need to do in
order to get the computer to recognize it? ___________________________________________________________________
4. In order to install Windows 98, we need to remove the DOS system files from the
C-drive, so that they won't interfere with the CD setup. There are two ways we can
a) Simple, but slow: reformat the C-drive without the /S parameter (Format C:)
b) Faster, but more complicated: Boot from the Win98 Startup disk and use the DOS ATTRIB
command to unhide the system files on Drive C, then delete them.
A:\> ATTRIB -r -h -s c:\*.*
Answer Chapter 2 review questions, 26-34 on p.75-76
Tomorrow, if all goes well, we will install Windows 98SE in the lab. Review the class handout, and Andrews, A+ in Depth, pages 499-504
Continue reading A+ Chapter 3, pages 81-105 to learn about Understanding the Boot Process and the Command line..
CPUs (We'll get to this when we're done building the computers)
Study Meyers Lab 2.1, if you have the manual.
See MCMCSE Study Guide- Processors for more notes on CPUs http://www.mcmcse.com/comptia/aplus/notes/processor.shtml
See Geek.com (http://www.geek.com/procspec/procspec.htm) for a near-complete listing of Intel CPUs.
See Erols com (http://users.erols.com/chare/sockets.htm) and CPU Socket and Slot Criteria for pictures and info about CPUs, sockets, and slots.