You wouldn't have to install it yourself, it should be picked automatically.
Also, when you get to the partitioning dialogs, you can hit Go Back to get to the main menu, select "Execute a shell", and execute the following command to check that partman-prep is installed: grep 'Package: partman-prep' /var/lib/dpkg/status Still, it should be shipped together with the base image in your case. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1533587 Title: Ubuntu 14.04.04 installer does not list Prep Boot in Partition Settings To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/partman-prep/+bug/1533587/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs