Hi Barry,
Here are some of my install tests
Virtualization
Qemu 5.1. running on FossaPup 64 loads the EasyOS .img correctly with it's 2 internal partitions
Virtualbox 6.1.26 on FossaPup 64 loads EasyOS works when the .img is converted to .vdi. When using RDP to display, I am having a problem with seeing the bottom menu bar, even with scaled display mode
Barebones Bootloader
Modifying my grub2dos menu.lst to use the extracted vmlinuz and intrd files from EasyOS img fails. The vmlinuz and initrd are on the bood drive that is formatted as ext4. Problems with this method make a bit of sense, since EasyOS was not expecting ext4, and can't find a second partition layout as what is inside the .img file.
Personally, I have customized syslinux, grub, etc configurations where I normally just add vmlinuz, initrd, etc. references manually I prefer it over using something like Ventoy, or reformatting my USB (losing all of the installed OS images on it). Even though EasyOS fails to boot via this method, I can still evaluate it via virtualization methods just fine.