install2, live, live.mk, rescue: Add local boot for grub-pc menu (iso)

conf.d/live.mk

@@ -11,7 +11,8 @@ distro/syslinux: distro/.boot \
 endif
 
 ifeq (,$(filter-out i586 x86_64 aarch64 ppc64le riscv64,$(ARCH)))
-distro/grub: distro/.boot use/grub use/hdt +efi; @:
+distro/grub: distro/.boot use/grub use/hdt +efi \
+	use/grub/localboot_bios.cfg use/grub/sdab_bios.cfg; @:
 ifeq (,$(filter-out i586 x86_64,$(ARCH)))
 	@$(call set,BOOTLOADER,grubpcboot)
 endif

features.in/install2/config.mk

@@ -20,7 +20,8 @@ use/install2: use/stage2 sub/stage2@install2 use/metadata \
 # doesn't use/install2/fs on purpose (at least so far)
 use/install2/full: \
 	use/install2/packages use/install2/vmguest use/install2/tools \
-	use/syslinux/localboot.cfg use/syslinux/ui/menu use/bootloader
+	use/syslinux/localboot.cfg use/grub/localboot_bios.cfg \
+	use/syslinux/ui/menu use/bootloader
 	@$(call add,INSTALL2_PACKAGES,xorg-drv-synaptics)
 	@$(call add,INSTALL2_PACKAGES,xorg-drv-libinput)
 

features.in/live/config.mk

@@ -44,7 +44,7 @@ use/live/x11: use/live/base use/deflogin/desktop use/x11-autologin use/sound \
 # a browser is requested too, the recommended one can be overridden downstream
 use/live/desktop: use/live/x11 use/x11/xorg use/x11/wacom \
 	use/l10n use/browser/firefox/live use/xdg-user-dirs/deep \
-	use/syslinux/localboot.cfg +vmguest; @:
+	use/syslinux/localboot.cfg use/grub/localboot_bios.cfg +vmguest; @:
 
 # preconfigure apt for both live and installed-from-live systems
 use/live/repo: use/live
@@ -56,7 +56,8 @@ use/live/repo/online:
 	@$(call add,LIVE_PACKAGES,livecd-online-repo)
 
 # alterator-based permanent installation
-use/live/install: use/metadata use/xdg-user-dirs use/syslinux/localboot.cfg \
+use/live/install: use/metadata use/xdg-user-dirs \
+	use/syslinux/localboot.cfg use/grub/localboot_bios.cfg \
 	use/bootloader/live use/bootloader/grub
 	@$(call add,LIVE_PACKAGES,livecd-install)
 	@$(call add,LIVE_PACKAGES,livecd-installer-features)

features.in/rescue/config.mk

@@ -9,7 +9,7 @@ use/rescue/base: use/rescue/.base
 	@$(call add,RESCUE_LISTS,\
 		$(call tags,base && (rescue || network || security || archive)))
 
-use/rescue: use/rescue/.base use/syslinux/sdab.cfg \
+use/rescue: use/rescue/.base use/syslinux/sdab.cfg use/grub/sdab_bios.cfg \
 	use/services use/firmware/full +wireless
 	@$(call add,DEFAULT_SERVICES_DISABLE,rpcbind)
 ifeq (,$(filter-out i586 x86_64,$(ARCH)))