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4.2. The Boot Menu

In most cases, when you boot the Fedora 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.
The way the boot menu will look and function will vary somewhat depending on your system's firmware - BIOS systems use the SYSLINUX boot loader, and UEFI systems use GRUB2. However, both of the menus described below function very similarly from a user's point of view.
Use arrow keys to select an entry in the menu, and Enter to confirm your selection. The first two entries in the list will both proceed with the installation; the first one will start the installer directly, and the second one will verify the integrity of the boot media before starting the installation.
The final entry in the list is Troubleshooting; this is a submenu. Selecting this entry and pressing Enter will display a new set of selections, where you can choose to install in basic graphics mode (useful if you want to do a manual graphical installation but your system has issues with the default graphical installer), rescue an existing system, or test your system's memory modules for errors (on BIOS systems only). The troubleshooting menu also allows you to exit the boot menu and boot normally from your system's hard drive via the Boot from local drive option.
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 Tab on BIOS systems, or e on UEFI systems. The key to use is also displayed at the bottom of the screen.

Note

Editing boot options in 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.
On systems with BIOS firmware, only the actual boot options are displayed when you press Tab.
When editing the default set of options, you can change the existing ones as well as append additional ones. Once you finish, press Enter on BIOS or Ctrl+X on UEFI to boot the installer using your customized options.
Editing boot options on a system with BIOS firmware
The boot menu.
Figure 4.1. Editing boot options on a system with BIOS firmware

All available Anaconda boot options are described in Section 8.2, “Available Boot Options”.