• https://gist.github.com/robinsmidsrod/2234639
• https://wiki.snowfrs.com/IPV4_network_boot_with_iPXE

Not finished, just notes.

:rhel_8.5
set rhel-ver 8.5
goto rhel_server_ks

:rhel_server_ks
imgfree
kernel ${main-url}/rhel-install/RHEL${rhel-ver}-server-x86_64/isolinux/vmlinuz || goto failed
initrd ${main-url}/rhel-install/RHEL${rhel-ver}-server-x86_64/isolinux/initrd.img || goto failed
imgargs vmlinuz initrd=initrd.img ip=dhcp inst.repo=${main-url}/rhel-install/RHEL${rhel-ver}-server-x86_64 inst.noverifyssl  ramdisk_size=1024 console=ttyS1,115200 console=tty0 || goto failed
boot || goto failed

/rhel-install/RHEL${rhel-ver}-server-x86_64: is the extracted ISO.

• https://fai-project.org/fai-guide/#_a_id_install_a_fai_installs_your_plan
• https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1887767?comments=all
• https://butwt.wordpress.com/2020/06/29/pxe-booting-ubuntu-20-04-installer/

• Autoinstall.yml
• Storage config options
• https://utcc.utoronto.ca/~cks/space/blog/linux/Ubuntu2004AutoinstFormat
• https://medium.com/@tlhakhan/ubuntu-server-20-04-autoinstall-2e5f772b655a
• https://askubuntu.com/questions/1235723/automated-20-04-server-installation-using-pxe-and-live-server-image
• main ubuntu page for discussing autoinstall.yml
• https://gist.github.com/s3rj1k/55b10cd20f31542046018fcce32f103e
• https://gist.github.com/Brainiarc7/76902466d8628bcf5cd79d8953edbdd8

:ubuntu_20.04
set release focal
set type server
goto ubuntu_server

:ubuntu_20.04_nfs
set release focal
set type server
goto ubuntu_server_nfs

:ubuntu_server_nfs
imgfree
kernel ${boot-url}ubuntu/${release}/${type}/vmlinuz initrd=initrd netboot=nfs nfsroot=192.168.1.1:/srv/iso/ubuntu/${release}/${type} console=ttyS0 console=tty0 autoinstall net.ifnames=0 biosdevname=0 ip=dhcp ipv6.disable=1 ds=nocloud-net;s=${boot-url}ubuntu/cloud-init/
initrd ${boot-url}ubuntu/${release}/${type}/initrd
boot

:ubuntu_server
imgfree
kernel ${boot-url}ubuntu/${release}/${type}/vmlinuz initrd=initrd console=ttyS0 console=tty0 autoinstall url=${boot-url}ubuntu/${release}/live-${type}-${arch}.iso net.ifnames=0 biosdevname=0 ip=dhcp ipv6.disable=1 ds=nocloud-net;s=${boot-url}ubuntu/cloud-init/
initrd ${boot-url}ubuntu/${release}/${type}/initrd
boot

Some environments will require nfs-kernel-server to set port numbers for rpcmountd, mountd, and nlockmgr. It manifests itself as mount -t nfs server:/path/to/folder working, but /usr/lib/klibc/bin/nfsmount -o nolock -o ro <nfsserveriporhostname>:/srv/iso/ubuntu/focal/server /mnt getting a connection timeout.

:focaldesktopiso
imgfree
kernel ${boot-url}nfs/focal/casper/vmlinuz
initrd ${boot-url}nfs/focal/casper/initrd
imgargs vmlinuz initrd=initrd boot=casper ip=dhcp url=${boot-url}ubuntu/focal/ubuntu-20.04.1-desktop-amd64.iso maybe-ubiquity
boot

ipxe menu item

:groovyserver
imgfree
kernel ${boot-url}ubuntu/groovy/iso/vmlinuz initrd=initrd autoinstall url=${boot-url}ubuntu/groovy/iso/groovy-live-server-amd64.iso net.ifnames=0 biosdevname=0 ip=dhcp ipv6.disable=1 ds=nocloud-net;s=${boot-url}ubuntu/groovy/cloud-init/
initrd ${boot-url}ubuntu/groovy/iso/initrd
boot

File structure:

tftp$ find ubuntu/groovy/
ubuntu/groovy/
ubuntu/groovy/iso
ubuntu/groovy/iso/initrd
ubuntu/groovy/iso/groovy-live-server-amd64.iso
ubuntu/groovy/iso/vmlinuz
ubuntu/groovy/cloud-init
ubuntu/groovy/cloud-init/meta-data
ubuntu/groovy/cloud-init/user-data

meta-data

instance-id: groovy-autoinstall

user-data aka autoinstall.yml

#cloud-config
autoinstall:
  apt:
    geoip: true
    preserve_sources_list: false
    primary:
    - arches: [amd64]
      uri: http://us.archive.ubuntu.com/ubuntu
  identity: {hostname: autoinstall-00, password: $6$supersecretpasswdhash, realname: phil, username: phil}
  keyboard: {layout: us, variant: ''}
  locale: en_US.UTF-8
  network:
    network:
      ethernets:
        eth0:
          critical: true
          dhcp-identifier: mac
          dhcp4: true
      version: 2
  ssh:
    allow-pw: true
    authorized-keys:
      - "authkey ed25519 FTW"
    install-server: true
  storage:
    grub:
      reorder_uefi: False
    config:
    - {ptable: gpt, wwn: '0x50026b77832fae66',
      path: /dev/sda, wipe: superblock, preserve: false, name: '', grub_device: false,
      type: disk, id: disk-sda}
    - {device: disk-sda, size: 536870912, wipe: superblock, flag: boot, number: 1,
      preserve: false, grub_device: true, type: partition, id: partition-0}
    - {fstype: fat32, volume: partition-0, preserve: false, type: format, id: format-0}
    - {device: disk-sda, size: 1073741824, wipe: superblock, flag: '', number: 2,
      preserve: false, grub_device: false, type: partition, id: partition-1}
    - {fstype: ext4, volume: partition-1, preserve: false, type: format, id: format-1}
    - {device: disk-sda, size: 238444085248, wipe: superblock, flag: '', number: 3,
      preserve: false, grub_device: false, type: partition, id: partition-2}
    - name: ubuntu-vg
      devices: [partition-2]
      preserve: false
      type: lvm_volgroup
      id: lvm_volgroup-0
    - {name: ubuntu-lv, volgroup: lvm_volgroup-0, size: 119220994048B, preserve: false,
      type: lvm_partition, id: lvm_partition-0}
    - {fstype: ext4, volume: lvm_partition-0, preserve: false, type: format, id: format-2}
    - {device: format-2, path: /, type: mount, id: mount-2}
    - {device: format-1, path: /boot, type: mount, id: mount-1}
    - {device: format-0, path: /boot/efi, type: mount, id: mount-0}
  version: 1
  user-data:
    timezone: America/Chicago
    disable_root: false
  late-commands:
    - echo 'phil ALL=(ALL) NOPASSWD:ALL' > /target/etc/sudoers.d/ubuntu
    - sed -ie 's/GRUB_CMDLINE_LINUX=.*/GRUB_CMDLINE_LINUX="net.ifnames=0 ipv6.disable=1 biosdevname=0"/' /target/etc/default/grub
    - curtin in-target --target /target update-grub2

list of bugs

• https://possiblelossofprecision.net/?p=2312
• https://superuser.com/a/1541939

#!ipxe
 
:freedos
:freedosfirmware
sanhook ${boot-url}firmware/precision_3420/payload.img || goto failed
sanboot --no-describe --drive 0x00 ${boot-url}firmware/freedos12.img
boot || goto failed

 
:failed
echo Booting failed, dropping to shell
goto shell

truncate payload.img --size 32MB
sfdisk payload.img << EOF
63,,b
EOF

losetup --partscan /dev/loop20 ./payload.img
mkfs.vfat /dev/loop20p1

mount /dev/loop20p1 /mnt/ 
cp <necessary files> /mnt/
umount /mnt
losetup -d /dev/loop20

• Main README
• WinPE

1. WinPE Install
   1. Download the Windows ADK for Windows 10, version 2004 (adksetup.exe)
   2. Download the Windows PE add-on for the ADK, version 2004 (adkwinpesetup.exe)
2. Copy WinPE into temp directory:
   1. Open “Deployment and Imaging Tools Environment”. This is a command prompt.

   2. mkdir C:\temp\winpe
      copype x86 C:\temp\winpe\x86
      copype amd64 C:\temp\winpe\amd64

3. Inject virtio drivers into winpe
   1. Open an elevated “Deployment and Imaging Tools Environment” prompt.
   2. Download drivers: Source
   3. Inject drivers AMD64

      dism /mount-image /imagefile:"C:\temp\winpe\amd64\media\sources\boot.wim" /index:1 /mountdir:"C:\temp\winpe\amd64\mount"
      dism /image:C:\temp\winpe\amd64\mount /add-driver /driver:c:\temp\winpe\drivers /recurse /forceunsigned
      dism /unmount-image /mountdir:"C:\temp\winpe\amd64\mount" /commit

   4. Inject drivers x86

      dism /mount-image /imagefile:"C:\temp\winpe\x86\media\sources\boot.wim" /index:1 /mountdir:"C:\temp\winpe\x86\mount"
      dism /image:C:\temp\winpe\x86\mount /add-driver /driver:c:\temp\winpe\drivers /recurse /forceunsigned
      dism /unmount-image /mountdir:"C:\temp\winpe\x86\mount" /commit