I'm a long time Puppy user, but I'm new to DebianDog. With Puppy I can manually frugal install by copying initrd vmlinuz and a handful of sfs files to a directory and adding an entry to my pre-existing boot manager (grub2). The DebianDog iso contains a mess of files and the installer wants to install a boot loader straight away. I don't want to overwrite my existing bootloader. How should I proceed? In my test I am using the busterDog iso.
I also tried the bullseye builder appimage but I didn't know what to do with all the files it created. That builder also produces an alarming number of errors while it was running.