How to MBR-boot to Ventoy from grub2

[Steve2926]

If ventoy grub2 boot code is not installed to the USB drive, how can I boot to Ventoy from another grub2 menu as there is no Ventoy core.img file present?

i.e.

1. Prepare USB drive with partition 1 and partition 2
   
2. standard grub2 is installed on USB drive
   
3. copy ventoy files from a ventoy USB drive to partition 2
   
4. MBR-boot to standard grub2 menu
   
5. Choose a grub2 menu entry to boot to Ventoy MBR grub2 on the second partition
   

if I get core.img.xz and extract core.img and use
multiboot (hd0,2)/ventoy/core.img
it hangs.

[Steve2926]

I would really like to be able to boot Legacy Ventoy from grub4dos and/or from legacy grub2.
This means I can add Ventoy to an existing bootable USB drive.
I just need Ventoy to contain a bootable i386-pc core.img file or a g2ldr file.
e.g. 
kernel /ventoy/g2ldr

or

root (hd0,2)

kernel /ventoy/core.img

[awengers44]

@steve2926
grub2 and grub4dos mbr loader, ventoy core.img
https://www.tnctr.com/topic/766182-vento...nt=2192822
https://github.com/ventoy/Ventoy/blob/ma...c/core.img

[Midas]

If anyone who has tested this successfully would summarize in a step-by-step manner, I'm sure it would be much appreciated by the community -- and me among them.

[Steve2926]

If anyone who has tested this successfully would summarize in a step-by-step manner, I'm sure it would be much appreciated by the community -- and me among them.

http://rmprepusb.blogspot.com/2020/09/ag...pport.html