I am trying to setup a Flash drive to preseed an installation for Ubuntu 12.10 Desktop. I an unclear how to get Ubiquity to load the preseed file. With the Alternate cd you could just add a menu option to load the preseed. I have edited txt.cfg to add a menu option (to the f6 text menu) which will allow me to select automatic installtion (loading the preconfig.cfg) or have the other options still available.
The new option shows up in the menu but when selected the installer starts but does not preseed any options.
Code:
label preseed
menu label ^Preseed Ubuntu
kernel /casper/vmlinuz
append noprompt cdrom-detect/try-usb=true file=/cdrom/preseed.cfg boot=casper only-ubiquity initrd=/casper/initrd.lz quiet splash --