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3.1 The Installation Program User Interface

The Red Hat Linux installation program uses a screen-based interface that includes
most of the on-screen ``widgets'' commonly found on graphical user
interfaces. They may look a little different than their more graphical
counterparts; Figures 3 and 4 are
included here to make them easier to identify. Here's a list of the most
important widgets:

    lWindow -- Windows (also referred to as dialog boxes
    in this manual) will appear on your screen throughout the installation
    process. At times, one window may overlay another; in these cases, you
    may only interact with the window on top. When finished with that window,
    it will disappear, allowing you to continue with the window that was
    underneath.

    lText Input -- Text input lines are regions where you can enter
    information required by the installation program. When the cursor rests on
    a text input line, you may enter and/or edit information on that line.

    lCheck Box -- Check boxes allow you to select or deselect a
    particular feature offered to you by the installation program. When the
    cursor rests within a check box, pressing [Space] causes the check box
    to toggle between a selected and unselected state.

    lText Widget -- Text widgets are regions of the screen that are
    devoted to the display of text. At times, text widgets may also contain
    other widgets, such as check boxes. It is possible that a text widget may
    contain more information than could be displayed at one time. In these
    cases, the text widget will have a scroll bar next to it; if you position
    the cursor within the text widget, you can then use the [\uparrow]
    and [\downarrow] keys to scroll through all the information
    available.

    lScroll Bar -- Scroll bars provide a visual indication of your
    relative position in the information being displayed in a text widget.
    Your current position is shown by a # character, which will move up
    and down the scroll bar as you scroll back and forth.

    lButton Widget -- Button widgets are the primary method of
    interacting with the installation program. By ``pressing'' these buttons,
    you will progress through the series of windows that make up the
    installation process. Buttons may be pressed when they are highlighted by
    the cursor.

    lCursor -- Although not a widget, the cursor is used to select
    (and interact) with a particular widget. As the cursor is moved from
    widget to widget, it may cause the widget to change color, or you may only
    see the cursor itself positioned in or next to the widget. In Figure
    3, the cursor is positioned on the Ok button.
    Figure 4 shows the cursor on the first line of the text
    widget at the stop of the window.

Figure 3: Installation Program Widgets

Figure 4: More Installation Program Widgets

As you might have guessed by our description of these widgets, the
installation program is character-based, and does not use a mouse. This is
due to the fact that the installation program must run on a wide variety of
computers, some of which may not even have a mouse. The following section
describes the keystrokes necessary to interact with the installation
program.

3.1.1 Using the Keyboard to Navigate

You can navigate around the installation dialogs using a simple set of
keystrokes. You will need to move the cursor around by using various keys
such as [<-], [->], [\uparrow], and
[\downarrow]. You can also use [Tab], and [Alt]-[Tab] to
cycle forward or backward through each widget on the screen. In most
cases, there is a summary of available function keys presented at the
bottom of each screen.

To ``press'' a button, position the cursor over the button (using
[Tab], for instance) and press [Space] (or [Enter]). To select
an item from a list of items, move the cursor to the item you wish to
select and press [Enter]. To select an item with a check
box, move the cursor to the check box and press [Space] to select
an item. To deselect, press [Space] a second time.

Pressing [F12] accepts the current values and proceeds
to the next dialog; it is usually equivalent to pressing the
OK button.

Please Note: Unless a dialog box is waiting for your input, do not press any
keys during the installation process -- it may result in unpredictable
behavior.

3.1.2 A Note About Virtual Consoles

There is more to the Red Hat Linux installation program than the dialog boxes it
presents as it guides you through the installation process. In fact, the
installation program makes several different kinds of diagnostic messages available to you, in addition to giving you a way to enter
commands from a shell prompt. It presents this information on five
virtual consoles which you can switch between using a single
keystroke. These virtual consoles can be very helpful if you encounter a
problem while installing Red Hat Linux. Messages displayed on the install or
system consoles can help pinpoint the problem. Please see Figure
5 for a listing of the virtual consoles, the keystrokes to
switch to them, and their contents.

ConsoleKeystrokeContents1[Alt]-[F1]installation dialog2[Alt]-[F2]shell prompt3[Alt]-[F3]install log (messages from install program)4[Alt]-[F4]system log (messages from kernel, etc.)5[Alt]-[F5]other messages

Figure 5: Virtual Console Information

In general, there should be no reason to leave virtual console #1 unless
you are attempting to diagnose installation problems. But if you are the
curious type, feel free to look around.

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