I have a similar problem with a Dell XPS desktop, but it seems to happen only when I copy files from an external hard disk to windows 7. When this happens I have to reinstall grub using the live CD. However, it works only if I use method 3 from the link:
https://help.ubuntu.com/community/Grub2#Reinstalling%20from%20LiveCD Without chroot it doesn't work for me. Since dell datasafe is almost always detecting the external drive, it may well have something to do with it. I will also try to unstall it to see what happens. -- Grub loading. The symbol ' ' not found. Aborted. Press any key... https://bugs.launchpad.net/bugs/482757 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