I am having the same problem "no setup signature found". I have a 9.10 fresh install and now trying to run a 10.04 alpha 3 disc and getting the error message when trying to install 10.04. I will try the idea above.
-- upgrade from dapper to hardy fails due to old grub https://bugs.launchpad.net/bugs/212722 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
