FWIW, the very last thing that grub-installer does is to set up kernel-img.conf to include update-grub, so if it crashes before that then that won't happen. (In general, if the installer crashes, then you can expect the installation to be incomplete in some ways, even if you attempt to work around the crashes.)
FWIW, the very last thing that grub-installer does is to set up kernel-img.conf to include update-grub, so if it crashes before that then that won't happen. (In general, if the installer crashes, then you can expect the installation to be incomplete in some ways, even if you attempt to work around the crashes.)