Theoretically the installation can only differ on legacy BIOS CHS values. But I do not expect this to be an issue today.
Which notebook? Which LE image?
The installation image can directly be written to the HD using an imaging tool. Change DEFAULT installer to DEFAULT run in /syslinux.cfg to boot a persistent system.
For PXE booting see https://wiki.libreelec.tv/configuration/network-boot. I don't know if someone already did this with windows.
It's a HP 620 and the image is this one LibreELEC-Generic.x86_64-9.2.6.img.gz. I tried your suggested but all I get is Non-System disk or disk error. Replace and strike any key when ready. I know the hard drive works because I installed Windows on it today.