Differences in the boot_command between Ubuntu Server 21.10 and 20.04

echeadle

5/26/23, 5:40 AM

Is there anyway to troubleshoot the boot_command between the various versions of Ubuntu servers? I spend hours searching google and finding vast differences in way people write the boot command.

I am using packer to create VM's for virtualbox. My current boot command looks like

"<enter><enter><f6><esc><wait> ", "autoinstall ds=nocloud-net;s=http://{{ .HTTPIP }}:{{ .HTTPPort }}/", "<wait><enter>"

This command works on Ubuntu Server 20.04 but fails on version 21.10.

My problem is that there seems to be no consensus on how the boot command should be written:

Another website has:

  "boot_command": [
    "<esc><wait><esc><wait><f6><wait><esc><wait>",
    "<bs><bs><bs><bs><bs>",
    "autoinstall ds=nocloud-net;s=http://{{ .HTTPIP }}:{{ .HTTPPort }}/ ",
    "--- <enter>"

Another one I saw had several rows of "<bs><bs><bs><bs><bs><bs><bs><bs>".

I am still searching documents and the internet to find a process of determining what a valid boot_command is.

Does anyone have a boot_command that works with 21.10? If so how did anyone figure out what it should be.

I am relatively new to Ubuntu and I have not used autoinstall in the past and the differences between the old preseed.cfg way and subuquity for servers and the desktop ubuquity are very confusing until I figure out the logic behind it all.

Thanks for any help.

0 + 0

boot

21.10

Score:0

Ubuntu

echeadle

6/4/23, 4:22 AM

Using packer's new HCL2 templates for creating boxes the following boot command works with Ubuntu Server 21.10. For json you can use the older style "boot_command": [] syntax.

boot_command = [
            " <wait>",
            " <wait>",
            " <wait>",
            " <wait>",
            " <wait>",
            "c",
            "<wait>",
            "set gfxpayload=keep",
            "<enter><wait>",
            "linux /casper/vmlinuz quiet<wait>",
            " autoinstall<wait>",
            " ds=nocloud-net<wait>",
            "\\;s=http://<wait>",
            "{{.HTTPIP}}<wait>",
            ":{{.HTTPPort}}/<wait>",
            " ---",
            "<enter><wait>",
            "initrd /casper/initrd<wait>",
            "<enter><wait>",
            "boot<enter><wait>"
        ]

0 + 0

David

6/4/23, 6:26 AM

This may work but it does not address the question as it is asked.

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Differences in the boot_command between Ubuntu Server 21.10 and 20.04

TH: ความแตกต่างใน boot_command ระหว่าง Ubuntu Server 21.10 และ 20.04

RO: Diferențele în boot_command între Ubuntu Server 21.10 și 20.04

RU: Различия в команде boot_command между Ubuntu Server 21.10 и 20.04

VI: Sự khác biệt trong boot_command giữa Ubuntu Server 21.10 và 20.04

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