With a Preseed File in the Initrd from the Kali Linux Guide by OnWorks

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With a Preseed File in the Initrd‌

You can add a file named preseed.cfg at the root of the installer’s initrd (this is the initrd which is used to start the installer). Usually, this requires rebuilding the debian-installer source package to generate new versions of the initrd. However, live-build offers a convenient way to do this, which is detailed in section 9.3, “Building Custom Kali Live ISO Images” [page 237].

This method also does not have any restrictions on the questions that you can preseed as the preseed file is available immediately after boot. In Kali, we already make use of this feature to customize the behavior of the official Debian installer.