2.8 Can I get and install Debian directly from a remote Internet site?
Yes. You can boot the Debian installation system from a set of files you can
download from our FTP site and its mirrors.
You can download a small CD image file, create a bootable CD from it, install
the basic system from it and the rest over the network. For more information
please see https://www.debian.org/CD/netinst/
.
You can also download even smaller floppy disk image files, create bootable
diskettes from them, start the installation procedure and get the rest of
Debian over the network. For more information, please see https://www.debian.org/distrib/floppyinst
.