Preseeding

The effects of seeding are assessed by comparing preseeding (or unseeded) estimates to the postseeding estimates.

2004, Joey Hess, "d-i preseed file version 0.1", reprinted in Frank Ronneburg, 2005, Debian GNU/ Linux Anwenderhandbuch, Some parts of the installation process cannot be automated using some forms of preseeding, because the questions are asked before the preseed file is loaded.

In addition to the preseed option, the boot command will then be longer than 100 characters, which defeats the purpose of preseeding -- a manual installation of Debian requires only twelve keystrokes before you are prompted for the root password.

This first command is run as early as possible, just after preseeding is read.

I'm using preseeding over network(PXE).