Hi Sandro, You should be able to achieve the desired effect by using the preseed/early_command.
Write a script (90adduser) that creates /target/etc/adduser.conf to suit you needs. Then define preseed/early_command to mkdir /lib/partman/finish.d and then put your 90adduser script in that directory, and make it executable. That script will then be run just after the partitions are mounted, but before the base install happens. You'll probably find the preseed_fetch command useful, which gets files from wherever your preseed file came from, so an early_command of something like this should do the trick: "mkdir -p /lib/partman/finish.d ; preseed_fetch /90adduser /lib/partman/finish.d/90adduser ; chmod +x /lib/partman/finish.d/90adduser" you'll find examples here: http://hands.com/d-i/lenny/start.cfg which is described here: http://hands.com/d-i/ (I'm pointing you at the lenny version because the jessie version has been abused for testing stretch recently, so has some dependencies that are not yet really available) Does that solve your problem? Cheers, Phil. -- |)| Philip Hands [+44 (0)20 8530 9560] HANDS.COM Ltd. |-| http://www.hands.com/ http://ftp.uk.debian.org/ |(| Hugo-Klemm-Strasse 34, 21075 Hamburg, GERMANY