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The [command]#%packages#, [command]#%pre# and [command]#%post# sections must end with [command]#%end#, otherwise the installation program will refuse the Kickstart file. The main command section has no special ending statement.
Omitting any required item results in the installation program prompting the user for an answer to the related item, just as the user would be prompted during a typical installation. Once the answer is given, the installation will continue. Note that if the system you are installing has no display, you will not be able to see the prompt, and the installation will appear to have failed.
Verifying the Kickstart File
When creating or customizing your kickstart file, it is useful to verify that it is valid before attempting to use it in an installation. {PRODUCT} includes the [application]*ksvalidator* command line utility which can be used to do this. This tool is a part of the [package]*pykickstart* package. To install this package, execute the following command:
# dnf install pykickstart
After installing the package, you can validate a Kickstart file using the following command:
$ [command]#ksvalidator _/path/to/kickstart.ks_#
Replace _/path/to/kickstart.ks_ with the path to the Kickstart file you want to verify.
For more information about this tool, see the `ksvalidator(1)` man page.
Keep in mind that the validation tool has its limitations. The Kickstart file can be very complicated; [application]*ksvalidator* can make sure the syntax is correct and that the file does not include removed options, but it cannot guarantee the installation will be successful. It also does not attempt to validate the [command]#%pre#, [command]#%post# and [command]#%packages# sections of the Kickstart file.
Making the Kickstart File Available
Once you create a Kickstart file, you can place it in one of the following locations:
On *removable media*, such as a DVD or USB flash drive connected to the installation system
On a *hard drive* connected to the installation system
On a *network share* reachable from the installation system
Normally, a Kickstart file is copied to removable media or a hard drive, or made available on the network. Placing the file in a network location complements the usual approach to Kickstart installations, which is also network-based: the system is booted using a PXE server, the Kickstart file is downloaded from a network share, and software packages specified in the file are downloaded from remote repositories.
xref:Network_based_Installations.adoc#chap-pxe-server-setup[Setting Up an Installation Server] offers some additional information about preparing for a network-based installation.
Starting the Kickstart Installation
Once you have everything ready - you have created a valid Kickstart file and you have either local boot media or a PXE server available, you can start the Kickstart installation. You need to use the [option]#inst.ks=# boot option either in the boot menu (when booting from local media), or add this option to your PXE server configuration. For information about boot options used in Kickstart installations, see xref:Boot_Options.adoc#sect-boot-options-kickstart[Kickstart Boot Options].