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Using the Maintenance Boot Modes
Use the older [application]*Yum* backend for package installation and dependency resolution instead of [application]*DNF*. See the [citetitle]_{PRODUCT} System Administrator's Guide_, available at link:++https://docs.fedoraproject.org/++[], for details about [application]*DNF*.
Used to specify that the machine being installed onto does not have any display hardware, and to prevent the installer from trying to detect a display.
Used to enable [application]*DNF* to handle package installation and dependency resolution in {PRODUCT} 21. [application]*DNF* is now used by default and this option has been replaced with [option]#inst.nodnf#, which reverts back to [application]*Yum*.
Used to disable specified drivers. This is now handled by the [option]#modprobe.blacklist=# option.
Used to disable IPv6 support in the installation program. IPv6 is now built into the kernel so the driver cannot be blacklisted; however, it is possible to disable IPv6 using the [option]#ipv6.disable# option.
Used to configure Virtual LAN (802.1q tag) devices. Use the [option]#vlan=# option instead.
Used in the past to configure additional low-level network settings. All network settings are now handled by the [option]#ip=# option.
Use a comma-separated list to disable multiple drivers. For example:
Upgrades are done in a different way in current {PRODUCT} releases. For more information about upgrading your system, see xref:advanced/Upgrading_Your_Current_System.adoc#chap-upgrading[Upgrading Your Current System].
Turns the [application]*Kdump* installer add-on `on` or `off` (the add-on is off by default). If you use [option]#inst.kdump_addon=on#, a new screen, which allows you to configure the [application]*Kdump* kernel crash dumping mechanism, will appear in the main menu of the graphical or text interface (see xref:install/Installing_Using_Anaconda.adoc#sect-installation-gui-kdump[Kdump]). Enabling this add-on is also necessary to use the xref:appendixes/Kickstart_Syntax_Reference.adoc#sect-kickstart-commands-kdump[%addon com_redhat_kdump (optional) - Configure kdump] Kickstart command.
To work around this issue, either use the [option]#ksdevice=link# boot option, or add the [option]#--device=link# option to the [command]#network# command in your Kickstart file.
To test the integrity of an ISO image, append the [option]#rd.live.check# to the boot loader command line. Note that this option is used automatically if you select the default installation option from the boot menu (`Test this media & install Fedora`).
To load the rescue system with the installation disk or USB drive, choose `Rescue a {PRODUCT} system` from the Troubleshooting submenu in the boot menu, or use the [option]#inst.rescue# boot option.
To halt the tests and reboot your computer, press the kbd:[Esc] key at any time.
This option forced [application]*Anaconda* to use the `/dev/ttyS0` console as the output. Use the [option]#console=/dev/ttyS0# (or similar) instead.
This option controls which Kickstart files and installation logs are saved to the installed system. It can be especially useful to disable saving such data when performing OEM operating system installations, or when generating images using sensitive resources (such as internal repository URLs), as these resources might otherwise be mentioned in kickstart files and/or logs on the image. Possible values for this option are:
This option controls the usage of _zRAM_ swap during the installation. It creates a compressed block device inside the system RAM and uses it for swap space instead of the hard drive. This allows the installer to essentially increase the amount of memory available, which makes the installation faster on systems with low memory.
This option allows for the configuration of different installation methods using different formats. The syntax is described in the table below.
This only applies to packages directly specified in the `%packages` section. If a package is only installed as a dependency, only the exact specified dependency will be installed. For example, if you are installing package [package]*foo* which depends on package [package]*bar*, the former will be installed in multiple variants, while the latter will only be installed in variants specifically required.