On Thu, Sep 6, 2018, 4:17 AM Tom Horsley <horsley1953@gmail.com> wrote:
On Wed, 5 Sep 2018 22:26:19 -0600
Chris Murphy wrote:

> That's up to the grub.cfg contents.

It never gets that far. I need the "early" config
I'm supposed to be able to embed in the grub
image, but grub2-install has been "improved"
so it never invokes an external grub-mkimage
tool the docs say I should be able to pass
with the --grub-mkimage option :-(

At least I think that's what I need :-)


For sure is unnecessary. And you won't be able to Secure Boot because the bootloader won't be signed.

livecd-tools still has livecd-iso-to-disk script that can create a USB stick that's UEFI and BIOS bootable.

https://github.com/livecd-tools/livecd-tools/blob/master/tools/livecd-iso-to-disk.sh

The optional persistent overlay will eventually blow up and will have to be reset. Avoiding that means doing a real install to the USB stick.

Chris