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After you have made a bootable USB flash drive or a CD or DVD using the steps described in xref:install/Preparing_for_Installation.adoc#sect-preparing-boot-media[Preparing Boot Media], you are ready to boot the installation. Note that the steps described below are generic and the exact steps will vary somewhat depending on your system - particularly on your motherboard manufacturer.
All available [application]*Anaconda* boot options are described in xref:advanced/Boot_Options.adoc#sect-boot-options-available[Available Boot Options].
Also note that {PRODUCT} only fully supports version 2.2 of the UEFI specification. Hardware that supports version 2.3 or later will boot and work normally, but the additional functionality defined by these later specifications will not be available. The UEFI specifications are available from link:++[].
Booting the Installation
Booting the {PRODUCT} Installer
Editing boot options in [application]*GRUB2* (on UEFI systems) will display the entire configuration for the selected entry. Actual boot options are configured on the line which starts with the `linux` (or `linux16` or `linuxefi`) keyword. Do not modify any other lines in the configuration.
Editing boot options on a system with BIOS firmware
Every menu entry in the list is a predefined set of boot options, and these options can be customized to change some aspects of the installer's behavior. To edit the default set of boot options, press kbd:[Tab] on BIOS systems, or kbd:[e] on UEFI systems. The key to use is also displayed at the bottom of the screen.
Follow the on-screen instructions to access the boot menu. If no instructions are displayed (some systems only display a graphical logo during early stages of boot), try pressing kbd:[F12], kbd:[F11], kbd:[F10] or kbd:[Del] several times; these are most commonly used keys. Note that there is usually a very short time window provided to access the menu; once it passes, you need to restart the system and try again.
In most cases, when you boot the {PRODUCT} installer from your prepared boot media or server, the boot menu will be the first thing that appears. From this menu, you can either start the actual installation, or you can use the boot media to rescue an existing system.
On Mac hardware, hold down the kbd:[Option] key to enter the boot media selection menu.
On systems with BIOS firmware, only the actual boot options are displayed when you press kbd:[Tab].
Plug in the boot USB drive, or insert the boot CD or DVD into your computer's optical disc drive. Alternatively, if you plan on booting from a network boot (PXE) server, make sure that the network cable is plugged in.
Preparing to Boot
Press F12 to select boot device, or Del to enter SETUP
{PRODUCT} does not support UEFI booting for 32-bit x86 systems. Only BIOS boot is supported on these systems.
Restart the system. Once it starts rebooting, it should display a prompt similar to the following (usually at the bottom of the screen):
Some older systems may not support choosing a boot device at startup. In that case, enter the system's SETUP (BIOS), and change the default boot order so that your boot media (CD, DVD, USB or network) has higher priority than internal hard drives.
The boot menu.