A package called grub-gfxboot is neither present in Ubuntu nor Debian.
You probably have added custom sources to your /etc/apt/sources.list
Could you please give the output of the following command to find out where 
this package comes from:
$ LANG=C apt-cache policy grub-gfxboot

-- 
Grub says I have Debian instead of Ubuntu
https://launchpad.net/bugs/72957

-- 
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs

Reply via email to