Wednesday, August 6, 2008
Starting the Install
To get started, insert the first Fedora Core CD-ROM and reboot your computer.
You'll first see a boot screen that offers a variety of options for booting
(see Figure 3.1). Options may be passed to the Linux install kernel by typing
special keywords at the boot prompt. Note that the install kernel is different
from the kernel that will be installed on your system during installation!
The basic options most often used are
<ENTER>—Starts the install using a graphical
interface. The graphical interface supports a mouse and offers check boxes and
text fields for choosing software, configuring options, and entering
information.linux text—Starts the install using a graphical text
interface.
To install using a text-based interface (used for our example), type
linux text and press Enter; otherwise, just press Enter to start the
install.
Several function keys can be used at this first boot screen to cycle through
four help screens providing additional install information. Use these function
keys at the boot prompt to jump to different screens describing alternative
installation options and modes:
Pressing F1 returns to the initial boot screen.
Pressing F2 details some boot options.
Pressing F3 gives general installation information (described next in
this chapter).Pressing F4 describes how to pass kernel video arguments, useful for
configuring video hardware to support a graphical install at a specific
resolution (such as 800-by-600 pixels).Pressing F5 describes Fedora Core's rescue mode.
3.1 Select an installation option in this first Fedora Core boot
screen.
Some of the options you can use at the boot prompt include
linux noprobe—Disables probing of the system's
hardware.linux mediacheck—Verifies the integrity of one or more
install CD-ROMs.linux rescue—Boots to single-user mode with a root operator
prompt, disabling X, multitasking, and networking; this option can be used if
you need to reconfigure your boot loader or to rescue data from your
system.linux dd—Uses a driver disk (a floppy image) and possibly
one or more kernel arguments (such as linux mem=512M expert) to enable
certain types of hardware, such as networking cards.linux askmethod—Prompts for the type of install to perform,
such as over a network.linux updates—Starts an installation update.
memtest86—Starts a cyclical, intensive series of memory
tests of your PC's RAM.linux nofb—Starts a graphical installation, but does not
use a framebuffer (helpful with problematic or unsupported video).linux resolution=width x height—Installs using a
graphical display of width-by-height pixels (such as
resolution=800x600), which can help match older or less capable display
monitors and video cards.
The F4 screen lists options that can be used at the boot prompt to set a
specific resolution for the installation. For example, this is done by typing
linux resolution= at the boot prompt, along with an option such as
"800x600". Other options, such as optional arguments for
kernel modules (in order to properly configure or initialize hardware) may be
passed to the install kernel if you use the noprobe option.
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The installer will start automatically in 60 seconds. Press the spacebar,
reboot, or turn off your PC if you need to halt the install.
After you press Enter, the installer's kernel loads, and you're
asked (in a text-based screen) if you would like to perform a media check of
your CD-ROM, as shown in Figure 3.2.
This check can take quite some time (depending on the speed of your CD
drive), but can ensure the integrity of the CD-ROM's contents, as an
md5sum value is embedded on each CD-ROM. This check can help foil
installation of malicious software from CD-ROMs with tampered contents. The
check can also be helpful to make sure that the CD-ROM you are using will work
on your PC and in your CD drive. To perform the check, choose OK; otherwise, use
the Tab key to navigate to the Skip button and press Enter to choose it.
3.2 You can check your CD-ROM media before installing Fedora.
After checking your CD-ROM or skipping the check, the display will clear. The
Fedora installer, Anaconda, will load, and you are presented with a graphical
welcome screen as show in Figure 3.3. The installer should recognize your
PC's graphics hardware and mouse. You can then click on the Release Notes
button to get detailed information about Fedora Core, along with tips on
hardware requirements and how to perform various installs.
If your pointing device (mouse) is not recognized, you can press Alt+R to
"press" the Release Notes button. Similarly, you can click Alt+H to
hide text shown on the left side of the screen, but you should take a minute to
read frame's contents.
3.3 Read Help or Release Notes before installing Fedora.
Click Next (or press Alt+N) to continue, and the installer asks you to select
one of 21 different languages for the installation, as shown in Figure 3.4.
3.4 Select a language to use when installing Fedora.
You can navigate the installer's dialogs (during a text-based or
graphical install) using the Tab key. You can scroll through lists using your
cursor keys. Note that you can now "step backward" through the install
by using a Back button. Select a language and click the Next button.
You'll then be asked to select a keyboard for the install, as shown in
Figure 3.5.
3.5 Select a default keyboard to use when installing and using
Fedora.
Scroll to the appropriate keyboard option. You use this option to configure
the install to support one of 54 different language keyboards. Click Next after
making your selection. You're next asked to select a pointing device (your
mouse), as shown in Figure 3.6.
3.6 Select a pointing device to use when installing and using
Fedora.
Select one of the 41 different mouse types to match the pointing device you
plan to use for your console or desktop sessions. Note that Linux supports USB
devices, including USB mice.
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If you select a two-button mouse from the list during installation, notice
that three-button emulation is automatically selected. This emulation enables a
middle-mouse button to be simulated when both the left and right mouse buttons
are pressed simultaneously. Use of the middle (or 2) button is important for
certain actions, such as pasting text. You can also press Alt+E to mark the
check box for three-button emulation.
Click Next to continue. If your PC's monitor was not detected, you might
be asked to select your model from 132 different manufacturers. In rare
instances, you might have to specify your monitor's exact horizontal and
vertical frequencies. This can happen with older displays.
If an existing Linux install is detected, you'll be asked if you want to
upgrade and reinstall; otherwise, you're then asked to select a type of
installation, as shown in Figure 3.7.
3.7 Select a type of installation.
Select a type of installation suitable for your intended use—we'll
use a Server install for our example. As we mentioned earlier, you can use the
Custom install instead to tailor the amount, type, and specific packages to be
installed. This can be helpful in order to prune unnecessary software from your
system and might save some time later on. After you select the installation
type, click Next to continue. You'll then see a screen that offers a choice
of partitioning schemes and tools.
NOTE
Fedora's installer also supports the ability to monitor background and
install processes running during an installation. You can watch the progress of
an install and hardware information reported by the Linux install kernel by
navigating to a different console display or virtual console by
simultaneously pressing the Ctrl, Alt, and appropriate Fn key (such as F1
through F5).
Use this approach to watch for kernel messages, monitor hardware detection,
gain access to a single-user shell, and view the progress of the installer
script.
When using a graphical installer, press Ctrl+Alt+F4 (then Alt+F2 or Alt+F3)
to navigate to the various screens. Press Alt+F7 to jump back to the installer.
When performing a text-based installation, use Alt+F2 (then Alt+F3 or Alt+F4).
Use Alt+F1 to jump back to a text-based install.
Partitioning Your Drive
You learned how to choose and plan a partitioning scheme in "Planning
Partition Strategies," earlier in this chapter, based on the more specific
partitioning information offered in Chapter 2. The Disk Partitioning Setup
screen, shown in Figure 3.8, offers two options for disk partitioning. Here is
what the options do:
Using the Automatically Partition button conveniently partitions your
hard drive according to the type of installation you selected and configures the
partitions for use with Linux.Choosing the Manually Partition with Disk Druid button launches a
graphical partition editor that enables the creation of custom partition
schemes.
3.8 Select a partitioning scheme or tool.
NOTE
See the section "Partitioning Before and During Installation" in
Chapter 2. Chapter 10 contains information on using another partitioning
utility, the text-based Linux fdisk command.
For this example, select Manually Partition with Disk Druid button and click
Next. If you are using a new hard drive that hasn't previously been
partitioned, you'll be asked if you would like to create new partitions on
the drive. Click the Yes button to initialize the drive. If you are using a hard
drive that has been previously partitioned or formatted and the partitions are
recognized, Disk Druid will present the partitions in its partition dialog.
Figure 3.9 shows the graphical interface presented for a 6GB hard drive that
hasn't been partitioned.
3.9 You can use Disk Druid to partition your drive before installing
Fedora.
To use Disk Druid, select any listed free space, and then click the New
button (or press Alt+W) to create a new partition. Alternatively,
To get help, see the help frame on the left.
To create free space, scroll to an existing partition and use the Delete
button to delete the partition.
After you choose the New button, you see a screen as shown in Figure
3.10.
3.10 Set partition information about a selected or new partition on a hard
drive.
You use the Add Partition dialog to assign a mount point (such as
/boot or /), assign a filesystem (such as ext2,
ext3, RAID, swap, or vfat) by using the drop-down menu set at
ext3 by default, and assign the size of the partition. Remember that,
at a minimum, your system should have a root (/) and swap partition.
The ext3 filesystem is the best choice for your Linux partitions
because it is the default and specifically supported by Fedora, but you can also
use ext2 (and convert to ext3 later on—see Chapter 10).
The size of the partition can be fixed by entering a number (in megabytes), or
if you select the Fill All Available Space field, will use all remaining free
space (but not yet, as you need to create a partition for swap). Click OK to
save the new partition information.
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You can perform diagnostic checks on your storage media after installing
Fedora by using various Linux software tools, as shown in Chapter 10.
Remember: Linux requires at least a root (/) and swap partition. The
swap partition should be at least twice as large as the amount of installed
memory (or more) in order to assure system performance if you run a lot of
programs or host many users. After you create an initial partition for the root
filesystem, repeat the steps to create a new partition, but select swap as the
filesystem type using the drop-down menu. Figure 3.11 shows a simple, completed
partitioning scheme with a separate /home partition on a server using a
6GB hard drive.
3.11 Review your partitioning scheme for your hard drive.
Take a moment to review your partitioning scheme. If you are not satisfied
with the partitioning, you can make changes by selecting a partition and then
using the Edit button to change the partition's information (such as mount
point or type of filesystem). Use the Delete button to delete the partition
entry and to free up partition space. You can then use the New button again to
create partitions in the space that is now free. When satisfied, click Next to
continue the install.
Choosing, Configuring, and Installing the Boot Loader
After you accept the partitioning scheme, a screen appears asking you to
select a boot loader for booting Fedora (see Figure 3.12). This screen also
enables you to choose not to use a boot loader (when booting from floppy, a
commercial boot utility, a DOS partition, or over a network), and the ability to
boot other operating systems if you have configured a dual-boot system. Review
"Choosing a Boot Loader," shown previously in this chapter, for more
information on making this choice.
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Fedora will work well with other operating systems, but the reverse is not
always true. If you need specialized help with configuring a dual-boot system,
check various HOWTOs at
http://www.tldp.org/ for hints and
tips.
Select the GRUB boot loader. GRUB is typically installed in the MBR of the
first IDE hard drive in a PC. However, the boot loader can also be installed in
the first sector of the Linux boot partition, or even not installed on the hard
drive. (In which case, you'll need to create a boot floppy during the
install; see "Create a Boot Disk," later in this chapter.) Note that
you can also backtrack through the install process to change any settings.
3.12 Select whether you want to use a boot loader and configure other boot
options.
Note that you can assign a password for the boot loader. If you choose to use
this option, you will need to enter a password at the GRUB boot screen (see the
section "Login and Shutdown" at the end of this chapter for
information on graphical logins). Carefully note the password! It does not have
to be the same password used to log in, but if you password protect booting
through your computer's BIOS and use a boot loader password here, you will
subsequently need to enter three passwords (BIOS, boot loader, and login) in
order to access Linux. Type in a password of at least eight characters twice
(once on each line); then click OK or Cancel to exit the dialog.
If you click the Configure Advanced Boot Loader Options button, you're
asked for arguments to pass to the Linux kernel before booting. Kernel arguments
are used to enable or disable various features of Linux at boot time. If you
install the source to the Linux kernel, you'll find documentation about the
more than 200 different kernel arguments in the file
kernel-parameters.txt under the /usr/src/linux/Documentation
directory.
Click Next to set your boot loader configuration. You'll then proceed to
network interface configuration, as shown in Figure 3.13.
Network Configuration
If you have an installed network adapter, you are asked for network
configuration details, as shown in Figure 3.13. Fedora can be set to
automatically configure networking upon booting. Note that you can also
configure networking following installation using Red Hat's
redhat-config-network graphical network administration tool (see
Chapter 13 for details about using these tools).
3.13 Select or enter networking configuration information.
NOTE
If the Linux kernel finds more than one network interface installed on your
computer, you might be asked to configure a second Ethernet device. This might
be the case, for example, if you are installing Fedora Core on a computer that
will serve as a gateway or firewall. If you configure more than one Ethernet
device, the device named eth0 will be the first active interface when
you start Fedora.
You can choose to have your interface information automatically set using
DHCP. Otherwise, especially if you are configuring a DHCP server, manually enter
an IP address, hostname, or gateway address (such as for a router), along with
DNS information if you click the Edit button listed by the interface (such as
eth0 in the example).
After making your selection, click Next to continue. You'll be asked to
select a firewall configuration.
Firewall and Security Configuration
Figure 3.14 shows the Fedora Core installer Firewall Configuration dialog,
which offers an opportunity to set default security policies for the new server.
Protecting your system using a firewall is especially important if your server
is connected to a network (although it is best to first install Linux, set
security policies, and then connect to a network). These settings in this
installation screen determine how remote computers or users will be able to
access your server. You can change these policies after finishing the install
and logging in.
3.14 Select a desired security level and allowed services.
If you have a general idea of how you want to protect your computer, use the
dialog shown in Figure 3.14 to turn on firewalling.
Choosing the No Firewall setting isn't recommended; use this setting
only if Fedora will be used as a non-networked workstation.
NOTE
Note that you can also manually configure security settings after
installation using the text-based lokkit command,
redhat-config-securitylevel client, or graphical gnome-lokkit
client. See Chapter 13 for details on how to protect your system using these
clients and various security level settings.
Click any allowable services, as shown in Figure 3.14. For some
servers, HTTP, FTP, and Simple Mail Transport Protocol (SMTP) requests are
acceptable and reasonable. Do not select or use the Telnet service, which is
used to allow remote network logins. For security reasons, the Secure SHell
(SSH) service is a much better choice (see Chapter 5 on how to use the
ssh client).
Click Next to install the firewall security settings. You'll then be
asked to select additional language support on your server. Again click Next
when finished.
Setting the Time Zone
You're next shown a Time Zone Selection dialog (see Figure 3.15). There
are two "clocks," or times, when using a PC: the hardware clock,
maintained by hardware in the computer and a backup battery; and the system
time, set upon booting and used by the Linux kernel. It is important to keep the
two times accurate and in synchronization because automated system
administration might need to take place at critical times. Many computer
installations use computers with hardware clocks set to GMT, which stands for
Greenwich Mean Time. (The more modern designation is UTC or
Coordinated Universal Time.) The Linux system time is then set relative
to this time and the default time zone, such as Eastern Standard Time, which is
–5 hours of UTC.
3.15 Select your time zone.
Setting the computer's hardware clock to UTC (GMT) has the advantage of
allowing the Linux system time to be easily set relative to the geographic
position of the computer and resident time zone (such as a Linux laptop user who
would like to create files or send electronic mail with correct time stamps, and
who has traveled from New York to Tokyo). See Chapter 4, "Post-Installation
Issues," for details on setting the date and time for Linux.
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Read the manual page for the hwclock command to learn how to keep a
running Linux system synchronized with a PC's hardware clock. See Chapter 4
for more details on using the hwclock command and Linux time-related
software.
Choose your time configuration, and then click Next.
Creating a Root Password and User Accounts
You're next asked to enter a root operator password, as shown in Figure
3.16. Type in a password, press Tab or Enter, and then type it again to make
sure that it is verified. The password, which is case sensitive, should be at
least eight characters (or more) and consist of letters and numbers. Note that
the password isn't echoed back to the display. Your root password is
important because you will need it to perform any system administration or user
management with Fedora.
3.16 Type in, and don't forget, your root password.
CAUTION
Don't forget your system's BIOS, boot loader, or root passwords!
Some equipment, such as notebook computers, might require factory replacement of
motherboard components if the owner forgets the BIOS password. The BIOS settings
on most desktop PCs can usually be reset via a jumper or removal and insertion
of the motherboard battery. If you forget your boot loader password, use a
bootdisk (perhaps created during installation as shown later on in this chapter)
or boot to a rescue mode using your first Fedora Core CD-ROM and reset the root
password using the passwd command.
When finished, click Next to continue on to software package selection for
your new server.
NOTE
You can only create a root account during a Fedora Core install. You will
have to create user accounts later on after booting, using command-line programs
(such as adduser) or the graphical redhat-config-users client.
Create an account for yourself and any additional users. Usernames traditionally
consist of the first letter of a person's first name and the last name. For
example, Cathy Taulbee would have a username of ctaulbee. Don't
forget to enter a password for any new user! If you create a user without a
creating a password, the new user will not be able to log in.
NOTE
You should create at least one user for your server besides the root
operator. This is for security purposes and to avoid logging in as root, either
through the keyboard at the server or remotely over the network. The default
shell and home directory settings should remain set at the defaults, which are
the Bourne Again SHell (bash) and the /home directory.
See Chapter 5 for how to become the root user or run root commands as a
regular user. See Chapter 9, "Managing Users," for details on managing
users.
Software Selection and Installation
The Package Group Selection dialog shown in Figure 3.17 displays the
installer's suggested software for your class of installation (a server in
our example).
3.17 Select software package groups for installation.
If you choose to install a personal desktop, workstation, or other
installation type, the software packages appropriate for that installation will
be automatically selected for you. Each package (actually a Group) provides many
different individual software packages (refer to "Choosing Software
Installation Options," earlier in the chapter).
Scroll through the list of package groups, and then click a software package
check box to select or deselect software to be installed. Note that the entire
size (drive space requirements) of the installed software will be dynamically
reflected by your choices.
Click the Next button when finished to start installing Linux and the Fedora
Core software.
The installer will then perform a quick dependency check and present a dialog
informing you that a log of the install will be saved under the /root
directory in the file named install.log. Press the Enter key to begin
the installation of the software on your system. Be certain that you're
ready when you confirm the process, as you cannot step back from this point
on!
The installer will then format and prepare your new Linux partitions.
Next, the installer will prepare for the install by gathering a list of the
RPM files and will start placing the software on the newly formatted partitions.
This process can take anywhere from several minutes to two or more hours,
depending on your PC and the amount of software you have chosen to be installed.
The installer reports on the name of the current package being installed and the
remaining time, as shown in Figure 3.18.
3.18 The Fedora installer formats your drive, and then installs selected
software package groups.
If you are installing over a network, go take a break because the install
will proceed unattended through the software installation. If you are using this
book's CD-ROMs, you might be prompted to remove the first CD-ROM and insert
another. You might also be asked to repeat this operation using the third CD-ROM
at some point.
Create a Bootdisk
When the software installation finishes, the installer will perform some
temporary file cleanup, install the boot loader, and then ask if you'd like
to create a boot diskette for possible use later on, as shown in Figure
3.19.
You can create this boot disk now, or, as mentioned earlier, you can use Red
Hat's mkbootdisk command later on while using Fedora. Select Yes
or No. Having a boot disk can be handy, especially if an error was made during
the install and the boot loader fails to boot Linux.
If you choose to create a boot disk, you'll need to have a blank disk on
hand. Select Yes, insert a blank disk when prompted, create the boot disk, and
continue the install.
3.19 Create a boot disk for use with Fedora.
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If you chose the X Window System, you can skip X configuration during the
install and configure X after installation. This might be a better approach if
the install fails to accurately probe your hardware or cannot configure X during
the install, but you still desire to have X software installed. See Chapter 6
for details on configuring X to work with your PC's graphics card.
Finishing the Install
You're done! Press the Exit button, and the installer will eject any
inserted CD-ROM and reboot. The GRUB boot loader will present a boot prompt as
shown in Figure 3.20.
If you have set a GRUB password, press the p key, type your password, and
press Enter. If you do nothing for 10 seconds or press Enter, either boot loader
will boot Linux.
NOTE
After installation, you can edit the file /boot/grub/grub.conf and
change the timeout= setting to change the boot time to a value other
than 10 seconds.
3.20 Boot Fedora with GRUB by pressing the Enter key or waiting 10
seconds.