Trying to install slackware64-current from USB

I am trying to help a student get Slackware64-Current installed on a Dell Latitude 3500. The machine does not have a CD drive so I am trying to use a USB stick to do the basic installation. The BIOS does not provide a legacy option, so I have to work through the UEFI mode to do the installation.

After some searching I came across a page at superuser.com entitled failed-command-prompt-in-slackware-uefi-installation with instructions on how to set up the USB stick. The initial answer, which references the slackware howto on installing on UEFI hardware, enabled me to create a USB drive that would start the machine, but it does not boot to a login prompt for me to start the installation process (yes, I know that the page title is a give away to the same problem, but I had hoped the answer solved the issue and it at least got me further down the path then anything else I saw).

Details:
First partition is EFI (0xEF00) with

1. elilo boot loader (BOOTX64.EFI)
2. elilo.conf (see below)
3. bzImage (copied from Slackware64-current's kernels/huge.s directory)
4. initrd.img (copied from Slackware64-current's isolinux directory)

The code in the elilo.conf file is
Code:prompt
timeout=50
default=install

image=bzImage
label=install
initrd=initrd.img
append="load_ramdisk=1 prompt_ramdisk=0 rw printk.time=0 SLACK_KERNEL=huge.s"Second partition contains the Slacware64-current image. It was installed using the command
Code:dd if=slackware64-current-install-dvd-2020.iso of=/dev/sdx2where x is the letter for the USB drive.

I had to work with the BIOS to add the USB stick as a boot option and appear to have that working. Unfortunately, when I start the boot process, I get the following three lines on the screen and then nothing else happens:

Quote:

ELILO boot: .... Loading kernel bzImage... done Loading file initrd.img...done

I obviously missed a step. Where do I go from here?