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Is there a way to customize the full disk encryption interface on boot? I want a different background or a blank screen showing instead of this:

http://i.stack.imgur.com/lgRlo.jpg

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The package responsible for this screen called Plymouth. Following ways possible, from simple to hard:

Use another precreated Plymouth theme

There are plenty themes around, some in Ubuntu distribution:

And even more in Internet:

Install it and select with the command:

sudo update-alternatives --config default.plymouth

Use GUI tool to create your own theme

Manually create theme or redesign existing

Plymouth themes stored at /lib/plymouth/themes/. Copy any existing theme directory (eg. ubuntu-logo) as your theme template (eg. to your home directory), renaming directory to "mytheme" or name you like. Modify theme information file (ends with .plymouth ), color script (ends with .script ), graphic file, etc. the way you like.

Copy your theme to the right place:

sudo cp -R ~/mytheme /lib/plymouth/themes/

Install your new theme:

do update-alternatives --install /lib/plymouth/themes/default.plymouth default.plymouth /lib/plymouth/themes/mytheme/mytheme.plymouth 100

Select your theme as default:

sudo update-alternatives --config default.plymouth

There's good article describing the process:

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  • thanks got it, can I change the hotkeys ESC, ARROWUP and F1 to change between logo or text mode? – John Smitty Jan 22 '15 at 20:48
  • I can't see a way to do it without changing source code of plymouth binary so far. Possible direction to look - use /etc/boottime.kmap.gz file to change boottime key mapping to required. But if you just need to remove all boottime output from screen the easy way is to switch to text mode theme ( see wiki.ubuntu.com/… ) and change theme colors to black on black. – dess Jan 22 '15 at 21:39

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