boot – installing lubuntu on nvme on legacy mobo

I cannot figure out how to install lubuntu on my nvme ssd. One issue is the legacy mobo. I did get manjaro to install and boot but cannot find a way to replicate the process in lubuntu. Can someone please point me to an articulation of the steps?

Here are the steps I used with the manjaro installer:

  1. KDE Partition Manager to partition and format nvme ssd with msdos table and ext4 fs. Mount point is /.
  2. KDE Partition Manager to partition and format a usb stick to use for booting. Structure is:

gpt table;

8mb unformatted empty space at start of stick, flagged as bios-grub;

rest of stick formatted as ext4, mount point is /boot

  1. Set installer to install / to nvme ssd
  2. Set installer to install bootloader to mbr of stick

That’s it. I haven’t been able to replicate this process with the lubuntu installer. It would be much appreciated if someone could amend my process list here to make it work for lubuntu.

thanks,
babag