This isn't an initramfs-tools specific issue, moving to Ubuntu project. The short answer is you need to resize your partitions, to do that you will need to boot a live CD or similar and use the partitioner to shrink the main partition and expand /boot.
** Package changed: initramfs-tools (Ubuntu) => ubuntu -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1472757 Title: How do I expand the free space in "/boot" ? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1472757/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs