I just tried again and noticed that during the process there was a not running grub install /dev/sda. Since sda is the pen drive (mounted as /cdrom) then this is writing grub to the pen drive and not the internal hdd.
-- Installing from USB drive writes boot sector to USB not HDD https://bugs.launchpad.net/bugs/630529 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