unlike Fedora and Redhat Ubuntu stores its grub file under /boot/grub.and in some remix versions it vary again,
StartUp-Manager is a free open-source GUI tool to manage settings for Grub (Grub Legacy), Grub 2, Usplash and Splashy. It provides a menu-driven interface which allows the user to set boot menu options such as the default operating system, menu timeouts and displays, password protection and much more. StartUp-Manager accomplishes this by translating the user’s GUI inputs into bootloader settings without the need to manually edit the bootloader file (in Ubuntu, normally /boot/grub/menu.lst).
Grub 2 Note:. StartUp-Manager ver 1.9.12-1 works with GRUB 2, however some of the options available with Grub Legacy have not yet been incorporated to work with Grub 2. The Boot Options tab remains essentially unchanged. The Appearance and Advanced tabs contain fewer entries at present, and the Security tab does not exist with Grub 2 fully-installed.
Currently the following StartUp-Manager options work with GRUB 2:
Misc. (Writes to the “GRUB_CMDLINE_LINUX=” line of /etc/default/grub but will not remove the same entries such as “splash” and “quiet” already entered on “GRUB_CMDLINE_LINUX_DEFAULT=”)
Show text during boot
Display resolution – Placed on “GRUB_CMDLINE_LINUX=” line of /etc/default/grub as “vga=XXX”. During boot GRUB 2 will note that the “vga=” option is deprecated.
sudo apt-get install startupmanager
go to Terminal