Version 0.3.5 for the GRUB2 Bootloader Editor was released. New features are:
Create GRUB splash images:
Which is accessible using the ‘Create’ button next to ‘Preview’:
Another new thing is Kernel Arguments & Terminal Suggestions (in the ‘Advanced’ tab):
I think it’s time for some text, enough screenshots
Creating a GRUB splash image is as easy as selecting the image you want to convert, select where to save the result and specify a resolution. The image resolution should match your GRUB resolution for better results. The ‘Force Resolution’ option ignores the aspect ratio of the image if checked and ‘Set As Wallpaper’ immediately sets the converted image as your GRUB wallpaper.
The purpose of ‘Suggestions’ is more of descriptive rather than assistive. They can give you a small description of some fancy GRUB/Linux Kernel keywords.
Kernel arguments Suggestions include quiet booting (supress messages), boot with a splash image (disabling it gets you back to text booting), and some other not-so-common-and-rather-weird options such as disabling ACPI and/or (Local) APIC (sometimes required when you are unable to boot and you get some strange ACPI-related messages) and booting into single user mode (mostly for troubleshooting).
Terminal Suggestions include some rare options (which I won’t mention here – they can be seen in the screenshots above) along with some other quite important: ‘Graphics Mode Output’ -for the Output Terminal- which must be set in order to customise GRUB’s appearance (colors/wallpapers/themes) and ‘PC BIOS & EFI Console’ which is the regular text console. Setting the ‘Terminal’ field overrides both Input and Output Terminal fields’ values.
Finally I have to mention the fact that previewing splash images is now done full-screen (gives you better understanding of how the image will look like in GRUB menu).
*ADDED: Splash image creation dialog.
*ADDED: Linux Kernel parameters suggestions.
*ADDED: Terminal suggestions.
*FIXED: Reload configuration after updating GRUB.
*FIXED: Preview GRUB wallpapers (=splash images) fullscreen.