Je ne me rappelle plus le fichier à modifier pour le splash screen. Par contre tu trouveras les spécificités ici
http://fedoraproject.org/wiki/Artwork/ThemingOverview ce qui te permettra de mettre ta propre images en remplacement par exemple.
Voir RHGB (Red Hat Graphical Boot)
Description:
Shown as the machine starts up...users can toggle between
1. Graphic "Hide Detail" mode and
2. Text "Show Detail" mode
[image01] File Name + Extension : /usr/share/rhgb/main-logo.png
[image01] Size: The current image is 320x396 pixels and gets scaled to a height of screen_height/2.
[image02] File Name + Extension : /usr/share/rhgb/system-logo.png
[image02] Size : The current image is 183x45 pixels and gets scaled to a height of 0.075*screen_height.
etc...
Testing Notes : (write-up by Andy Shellam) The RHGB screens are simply PNG images in the /usr/share/rhgb folder, and can be replaced by custom ones.
Pour un faire un pointeur animé :
To create a custom "throbber" (the animation of a few circles spinning round), create a PNG image of 288x24 - then in that image you need 12 images of 24x24 placed side-by-side, so when viewed left to right - that's your animation. Replace the /usr/share/rhgb/throbber-anim.png image with your image, reboot and you're sorted! In Fedora, the /usr/share/rhgb/large-computer.png isn't used - there are 2 other images - one which is the fedora system logo (the bubbly f), the other is the word "fedora" in the bottom-right corner. Replace these with your own PNGs and bingo, you've got a nice customised system
More information at
http://ruslug.rutgers.edu/~mcgrof/grub-images/