sanboot makes the ISO visible to UEFI but invisible to the Linux kernel
after ExitBootServices(). Switch to direct kernel/initrd boot with a small
CPIO overlay containing /pxe-init — a shell script that loads NIC drivers,
configures DHCP, downloads the ISO via wget, and creates a loop device
before handing off to the Proxmox installer init.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Instead of sanboot (which can't pass kernel params for automation),
switch back to kernel/initrd boot. The ISO is embedded in the initrd
as a CPIO append. A pxe-init wrapper script loop-mounts the ISO
before handing off to the original init, so the installer finds it
as a block device. Uses rdinit=/pxe-init kernel parameter.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
josh