Beginner guidance sought - creating my own boot environment based on the Debian installer

[Mark Bettles <alo0taoranges@gmail.com>]

Hello,

I am looking to create a rescue system, there is active discussion on the topic here, https://forum.manjaro.org/t/linux-vs-windows-my-experiences-and-a-possible-idea/36377

I wish to go from boot, to the the start of the installer, where can I obtain documentation on this process?