Mod Boot in Leopard (blue screen)

whinston · 01-07-2008, 08:18 PM

Hi, was wondering if anyone could point me in the right direction regarding modding the boot of OS X. Ive done a fair bit of searching, on this site and others, but not really come up with anything.

What i want to do is change the blue screen that comes up after the Apple logo, but before the login screen. Ive managed to change the boot.efi (im on an intel mac) so that the apple logo is what i want, as well as changing the login screen to what i want... but this middle bit seems to be frustrating.

Can anyone help?

AHunter3 · 01-08-2008, 09:13 AM

Where did you ferret out the info on how to replace the grey apple boot image? How to do so on a PowerPC mac is no secret, but last I'd heard no one has managed to do so on an Intel Mac. Can you give instructions? (I don't even have an Intel Mac yet, but I'm sure I will sooner or later)

Hal Itosis · 01-08-2008, 03:51 PM

Quote:

Originally Posted by AHunter3


	Where did you ferret out the info on how to replace the grey apple boot image? How to do so on a PowerPC mac is no secret, but last I'd heard no one has managed to do so on an Intel Mac. : Can you give instructions?

BootXChanger

Quote:

Originally Posted by whinston


	What i want to do is change the blue screen that comes up after the Apple logo, but before the login screen. : Can anyone help?

Nope... nobody.

-HI-

whinston · 01-09-2008, 01:55 PM

Quote:

Originally Posted by AHunter3


	Where did you ferret out the info on how to replace the grey apple boot image? How to do so on a PowerPC mac is no secret, but last I'd heard no one has managed to do so on an Intel Mac. Can you give instructions? (I don't even have an Intel Mac yet, but I'm sure I will sooner or later)

Right here... Ive already asked this guy about my question, but he didnt have any info on it.

http://www.dribin.org/dave/blog/arch...t_image_intel/

AHunter3 · 01-10-2008, 04:13 PM

I did something like that (but without RLE complexities) in order to figure out how to change the boot image on an old-world WallStreet PB.

It would be a very tiny bit of code, since it only has to encode for a single uniform color. That would imply an infinite range of replacement values but a damn difficult time of finding out where the code is hiding.

whinston · 01-11-2008, 03:04 AM

Right, im just wondering if its in the kernel or the window server.... whats the hex code for that color?

Zydeco · 02-28-2008, 05:07 PM

I was looking for something else, and accidentally found where the blue colour of the boot screen is stored (in 10.5 at least)
It's in the file /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/Configuration.plist
It's under Root/Colors/FrenchBlue, and has the red, green and blue values as numbers in a 0-1 scale.
It's easily editable with Property List Editor running as root, or with nano/pico/vi/emacs/ed in Terminal, but since it's a dictionary inside another dictionary I'm not sure if it can be done with the "defaults" command.

There are references to FrenchBlue in the same file, in Root/Palettes, I tried adding a new colour name and changing it there but I still got the blue for a fraction of a second before getting the colour I had added, and just changing the rgb values of FrenchBlue makes it.

I'll check in 10.4 and add it to the next version of BootXChanger

AHunter3 · 03-05-2008, 10:56 PM

Well, while there is indeed a .plist file by that name, at that location, in Tiger, it has no Color item listed under root

I'm sure they put it somewhere in Tiger but I still have no idea where.

afist · 08-02-2008, 08:09 PM

It been many months since this the last post. I just wondering is anyone able to change that blue color on startup? have anyone tried it?

alextrob · 12-25-2008, 08:39 PM

Quote:

Originally Posted by afist


	It been many months since this the last post. I just wondering is anyone able to change that blue color on startup? have anyone tried it?

There actually appear to be two slightly different blue screens that come up in between the grey Apple logo screen and the login screen. If you look closely you may see the slightly different shades of blue. Changing that Configuration.plist file mentioned above works, but only for the second blue screen.

I haven't been able to change the colour of that first blue screen but I think it is related to the blue screen that fades in and out when you plug in an external monitor or make resolution changes.

Does anyone know where the other blue screen plist is kept?

alextrob · 01-01-2009, 07:04 AM

Actually I got it the wrong way around in my above post. The plist I mentioned is the one that relates to resolution changes and external monitors.

It's still that first blue screen that I can't figure out how to change. I've tried just renaming a different image to Aqua Blue.jpg & putting it in the solid color default wallpaper folder but that didn't work. I'd have been pretty surprised if it did though. haha

Any ideas?

01-07-2008, 08:18 PM	#1
whinston Prospect Join Date: Jan 2008 Posts: 3	Mod Boot in Leopard (blue screen) Hi, was wondering if anyone could point me in the right direction regarding modding the boot of OS X. Ive done a fair bit of searching, on this site and others, but not really come up with anything. What i want to do is change the blue screen that comes up after the Apple logo, but before the login screen. Ive managed to change the boot.efi (im on an intel mac) so that the apple logo is what i want, as well as changing the login screen to what i want... but this middle bit seems to be frustrating. Can anyone help?

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01-08-2008, 09:13 AM	#2
AHunter3 Hall of Famer Join Date: Jan 2002 Location: New York City Posts: 3,003	Where did you ferret out the info on how to replace the grey apple boot image? How to do so on a PowerPC mac is no secret, but last I'd heard no one has managed to do so on an Intel Mac. Can you give instructions? (I don't even have an Intel Mac yet, but I'm sure I will sooner or later)

01-10-2008, 04:13 PM	#5
AHunter3 Hall of Famer Join Date: Jan 2002 Location: New York City Posts: 3,003	I did something like that (but without RLE complexities) in order to figure out how to change the boot image on an old-world WallStreet PB. It would be a very tiny bit of code, since it only has to encode for a single uniform color. That would imply an infinite range of replacement values but a damn difficult time of finding out where the code is hiding.

01-11-2008, 03:04 AM	#6
whinston Prospect Join Date: Jan 2008 Posts: 3	Right, im just wondering if its in the kernel or the window server.... whats the hex code for that color?

02-28-2008, 05:07 PM	#7
Zydeco Registered User Join Date: Feb 2008 Location: Salamanca, Spain Posts: 1	I was looking for something else, and accidentally found where the blue colour of the boot screen is stored (in 10.5 at least) It's in the file /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/Resources/Configuration.plist It's under Root/Colors/FrenchBlue, and has the red, green and blue values as numbers in a 0-1 scale. It's easily editable with Property List Editor running as root, or with nano/pico/vi/emacs/ed in Terminal, but since it's a dictionary inside another dictionary I'm not sure if it can be done with the "defaults" command. There are references to FrenchBlue in the same file, in Root/Palettes, I tried adding a new colour name and changing it there but I still got the blue for a fraction of a second before getting the colour I had added, and just changing the rgb values of FrenchBlue makes it. I'll check in 10.4 and add it to the next version of BootXChanger

03-05-2008, 10:56 PM	#8
AHunter3 Hall of Famer Join Date: Jan 2002 Location: New York City Posts: 3,003	Well, while there is indeed a .plist file by that name, at that location, in Tiger, it has no Color item listed under root I'm sure they put it somewhere in Tiger but I still have no idea where.

08-02-2008, 08:09 PM	#9
afist Registered User Join Date: Aug 2008 Posts: 1	It been many months since this the last post. I just wondering is anyone able to change that blue color on startup? have anyone tried it?

01-01-2009, 07:04 AM	#11
alextrob Prospect Join Date: Dec 2008 Posts: 2	Actually I got it the wrong way around in my above post. The plist I mentioned is the one that relates to resolution changes and external monitors. It's still that first blue screen that I can't figure out how to change. I've tried just renaming a different image to Aqua Blue.jpg & putting it in the solid color default wallpaper folder but that didn't work. I'd have been pretty surprised if it did though. haha Any ideas?