/grub2/grub.cfg theme parm

[Ed P]

In my cfg file I see: set theme=$prefix/themes/custom.config

but in my /grub2/themes/ folder I have no such file.

Microsoft Windows [Version 10.0.22631.3155]
(c) Microsoft Corporation. All rights reserved.

C:\grub2\themes>dir
 Volume in drive C is OS
 Volume Serial Number is FAA1-3F54

 Directory of C:\grub2\themes

03/02/2024  07:19 PM    <DIR>          .
03/02/2024  07:19 PM    <DIR>          ..
03/02/2024  06:21 PM    <DIR>          backgrounds
03/02/2024  06:21 PM    <DIR>          common
03/02/2024  06:21 PM         1,247,803 custom.background.png
03/02/2024  06:21 PM             1,866 custom.config.32.bios.txt
03/02/2024  06:21 PM             1,866 custom.config.32.efi.txt
03/02/2024  06:21 PM             1,866 custom.config.64.bios.txt
03/02/2024  06:21 PM             1,866 custom.config.64.efi.txt
03/02/2024  06:21 PM               861 custom.options.txt
03/02/2024  06:21 PM            97,514 custom.screenshot.jpg
03/02/2024  06:44 PM    <DIR>          icons
03/02/2024  06:21 PM    <DIR>          master
03/02/2024  06:21 PM    <DIR>          options.local
03/02/2024  06:21 PM    <DIR>          options.standard
               7 File(s)      1,353,642 bytes
               8 Dir(s)  108,355,031,040 bytes free

C:\grub2\themes>

What should the "set theme" parm be set to?

[Drummer]

Hey Ed,

Look at the very next line in your grub.cfg file.

The if statement sets up the $theme variable with the bit and bios suffixes.

I'm assuming that your grub.cfg file was generated by running Grub2Win.

Dave

[Ed P]

"Look at the very next line in your grub.cfg file."

# end-grub2win-user-section ********************************************************

"I'm assuming that your grub.cfg file was generated by running Grub2Win."

Yup.

#       Created on Saturday  March 2, 2024  at  18:21:58
#
# Generated by Grub2Win   Version 2.3.8.6   Build 1650   from directory  C:\grub2

[Drummer]

Hey Ed,

Please send me your Grub2Win diagnostics.

The theme code line you mentioned normally appears early in the automatically generated section of grub.cfg, not the user section.

I cannot debug your user code one line at a time without seeing the surrounding lines.

I need the complete files from your diagnostics to see where you have gone wrong in the user section.

Thanks again,

Dave

[Ed P]

I already found the answer, unfortunately this forum blocked it.

[Drummer]

Hey Ed,

Just curious, what was the answer and how did this forum block it.

If posts are being blocked, I want to report it to SourceForge.

Please advise.

Thanks,

Dave

[Ed P]

Hi Dave,

The answer revolved around these grub.cfg lines: (#44-46)

set theme=$prefix/themes/custom.config
if [ $grub2win_bootmode = EFI ] ; then set
theme=$theme.$grub2win_efibits.efi.txt ; else set
theme=$theme.$grub2win_procbits.bios.txt ; fi
export theme

Line 45 is a long if statement. Normally with if statements that include
an else I code them like this:

if [ $grub2win_bootmode = EFI ] ; then
   set theme=$theme.$grub2win_efibits.efi.txt
else
   set theme=$theme.$grub2win_procbits.bios.txt
fi

Which is clearer to read and understand. No diagnostics file needed.

Why did you code the if as a single line?

Ed

[Ed P]

[Ed P]