The Startup Disk Creator suffers from several bugs. You have found (maybe) two of them.
dd has been mentioned in this bug report. It is cloning - a very straight-forward process, but dd does what you tell it to do without questions - even if you tell it to wipe the family pictures. I made a tool to wrap a safety belt around dd, mkusb. There is a project, where the Startup Disk Creator will be radically changed - the intention is that it will also use dd under the hood. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1507002 Title: "boot error" due to gcc v5 transition To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/syslinux/+bug/1507002/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs