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Update: I found the solution in the accepted answer of this post: How to specify default Ubuntu 16.04 installation language in isolinux/lang?

I'm trying to make an auto install ISO using this repo as a base: https://github.com/onedr0p/k8s-cluster-ubuntu-autoinstall.

Base Ubuntu ISO is: ubuntu-20.04.1-live-server-amd64.iso

It works nearly flawlessly.

The issue is that when I insert the ISO and boot, it first asks for a language in a purple full screen page and then it goes to a menu that has an option to start the installation.

This is the step that I want to skip, I want it to select English and start the installation.

The next steps work without issue, it installs everything automatically.

The screens that I want to skip look like these:

enter image description here enter image description here

Note that there is also this screen, but this one is fine, my cloud-config chooses the correct language automatically on that screen:

enter image description here

How could I achieve this? Is this something that I can set in the cloud-config? I'm thinking not, because it seems to load it only after you click "Install Ubuntu". Do I have to change something in the ISO? (The code that makes the ISO is in the file docker-entrypoint.sh in the repo that I linked above.)

There are so many ways to do automatic installs and some of them are outdated, I can't find anything useful on Google.

I also noticed that, if I reboot the computer instead of choosing a language, it will start the installation automatically...

Here's the /boot/grub/grub.cfg:


if loadfont /boot/grub/font.pf2 ; then
    set gfxmode=auto
    insmod efi_gop
    insmod efi_uga
    insmod gfxterm
    terminal_output gfxterm
fi

set menu_color_normal=white/black
set menu_color_highlight=black/light-gray


set timeout=5
menuentry "Install Ubuntu Server" {
    set gfxpayload=keep
    linux   /casper/vmlinuz   quiet  ---
    initrd  /casper/initrd
}
menuentry "Install Ubuntu Server (safe graphics)" {
    set gfxpayload=keep
    linux   /casper/vmlinuz   quiet  nomodeset ---
    initrd  /casper/initrd
}
grub_platform
if [ "$grub_platform" = "efi" ]; then
menuentry 'Boot from next volume' {
    exit
}
menuentry 'UEFI Firmware Settings' {
    fwsetup
}
fi

and the /isolinux/txt.cfg:

default live
label live
  menu label ^Install Ubuntu Server
  kernel /casper/vmlinuz
  append   initrd=/casper/initrd quiet  ---
label live-nomodeset
  menu label ^Install Ubuntu Server (safe graphics)
  kernel /casper/vmlinuz
  append   initrd=/casper/initrd quiet  nomodeset ---
label memtest
  menu label Test ^memory
  kernel /install/mt86plus
label hd
  menu label ^Boot from first hard disk
  localboot 0x80

I can see that this is where the menu comes from, I'll try some stuff like setting set timeout=5 to 0.

Oylex
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2 Answers2

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Remove Try/Install screen

Have a look at /boot/grub/grub.cfg.

The command maybe-ubiquity will send you to the Try/Install screen.

The command only-ubiquity will send you to the Install screen.

If you remove these, you should go directly to Try Ubuntu.

If you are booting using Syslinux, edit /isolinux/txt.cfg.

C.S.Cameron
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0

To remove the choice for languages in Ubuntu editions which would still have it, this is what is needed:

  • remove the file "langlist" from the isolinux directory
  • remove the file "langlist" from the bootloader cpio archive located under the isolinux directory
  • in the file isolinux.cfg located under the isolinux directory, change "prompt 0" for "prompt 10" (this is what I did).

The result : no more choice for languages at the start of the live, and I get to have 30 seconds to change the boot stanza.

Else : I customized the content of the boot stanzas directly in the files txt.cfg (located under the isolinux directory) and grub.cfg (located under boot/grub directory).

In the chroot, while using CUBIC, I chose my language in both choices, and once done, performed an update-initramfs -u to refresh the initrd.img file.

For the bootloader cpio archive, I used command lines found on the web to make the modifications, and I did it as root, to be sure not to change the rights in its content. (Based on paragraphs 2 and 7 in this page https://www.thegeekstuff.com/2010/08/cpio-utility/).

meylodie
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