Hi @TerryH ,
If this bit of info does not help you it might help others who have trouble booting QuickPup64 23.01 RC3.
In my case the ISO booted fine in a QEMU virtual machine. A frugal install booted fine in a 5 year old laptop.
But I had issues booting with a relatively new (2023) laptop - an HP + AMD / Radeon.
The puppy_quickpup64...sfs could not be found. Actually I was booting from an SD card, with the Puppy frugal folders in a ext4 SSD partition. This was solved by changing pmedia=usbflash in the GRUB2 code to : pmedia=satahd as I was booting from an SSD hard drive partition.
Following that the boot continued further until the video would not load (whatever the term is) and xorgwizard sent me around in circles getting nowhere. Finally I checked the README-extra_sfs text file in the ISO and consequently downloaded the updated firmware fdrv from http://www.fishprogs.software/puppy/firmware-sfs/ and swapped out the old fdrv.
Problem solved, although this meant that pupmode=12 was used, whereas I prefer pupmode=13 ). But at least I had a working frugal install.