diff --git a/tests/ahci_test.in b/tests/ahci_test.in
index 3f7645ad8..6d2e61d4e 100644
--- a/tests/ahci_test.in
+++ b/tests/ahci_test.in
@@ -22,16 +22,16 @@ grubshell=@builddir@/grub-shell
 case "${grub_modinfo_target_cpu}-${grub_modinfo_platform}" in
     # PLATFORM: Don't mess with real devices when OS is active
     *-emu)
-	exit 0;;
+	exit 77;;
     # FIXME: qemu gets bonito DMA wrong
     mipsel-loongson)
-	exit 0;;
+	exit 77;;
     # PLATFORM: no AHCI on ARC and qemu-mips platforms
     mips*-arc | mips*-qemu_mips)
-	exit 0;;
+	exit 77;;
     # FIXME: No native drivers are available for those
     powerpc-ieee1275 | sparc64-ieee1275 | arm*-efi)
-	exit 0;;
+	exit 77;;
 esac
 
 imgfile="`mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"`" || exit 99
diff --git a/tests/cdboot_test.in b/tests/cdboot_test.in
index bf9549a6b..f00cdec58 100644
--- a/tests/cdboot_test.in
+++ b/tests/cdboot_test.in
@@ -22,16 +22,16 @@ grubshell=@builddir@/grub-shell
 case "${grub_modinfo_target_cpu}-${grub_modinfo_platform}" in
     # PLATFORM: emu is different
     *-emu)
-	exit 0;;
+	exit 77;;
     # PLATFORM: Flash targets
     i386-qemu | i386-coreboot | mips-qemu_mips | mipsel-qemu_mips)
-	exit 0;;
+	exit 77;;
     # FIXME: currently grub-shell uses only -kernel for loongson
     mipsel-loongson)
-	exit 0;;
+	exit 77;;
     # FIXME: OFW fails to open CD-ROM
     i386-ieee1275)
-	exit 0;;
+	exit 77;;
 esac
 
 v=$(echo hello | "${grubshell}" --boot=cd)
diff --git a/tests/core_compress_test.in b/tests/core_compress_test.in
index 52708fd83..24a811418 100644
--- a/tests/core_compress_test.in
+++ b/tests/core_compress_test.in
@@ -22,7 +22,7 @@ grubshell=@builddir@/grub-shell
 case "${grub_modinfo_target_cpu}-${grub_modinfo_platform}" in
     # FIXME: Only mips currently supports configurable core compression
     *-emu | i386-* | x86_64-* | sparc64-* | ia64-*)
-	exit 0
+	exit 77
 	;;
 esac
 
diff --git a/tests/ehci_test.in b/tests/ehci_test.in
index df408d77a..df671b4b6 100644
--- a/tests/ehci_test.in
+++ b/tests/ehci_test.in
@@ -22,16 +22,16 @@ grubshell=@builddir@/grub-shell
 case "${grub_modinfo_target_cpu}-${grub_modinfo_platform}" in
     # PLATFORM: Don't mess with real devices when OS is active
     *-emu)
-	exit 0;;
+	exit 77;;
     # FIXME: qemu gets bonito DMA wrong
     mipsel-loongson)
-	exit 0;;
+	exit 77;;
     # PLATFORM: no USB on ARC and qemu-mips platforms
     mips*-arc | mips*-qemu_mips)
-	exit 0;;
+	exit 77;;
     # FIXME: No native drivers are available for those
     powerpc-ieee1275 | sparc64-ieee1275 | arm*-efi)
-	exit 0;;
+	exit 77;;
 esac
 
 imgfile="`mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"`" || exit 99
diff --git a/tests/fddboot_test.in b/tests/fddboot_test.in
index 32281c75f..6ef49efcb 100644
--- a/tests/fddboot_test.in
+++ b/tests/fddboot_test.in
@@ -22,28 +22,28 @@ grubshell=@builddir@/grub-shell
 case "${grub_modinfo_target_cpu}-${grub_modinfo_platform}" in
     # PLATFORM: emu is different
     *-emu)
-	exit 0;;
+	exit 77;;
     # PLATFORM: Flash targets
     i386-qemu | i386-coreboot | mips-qemu_mips | mipsel-qemu_mips)
-	exit 0;;
+	exit 77;;
     # FIXME: currently grub-shell uses only -kernel for loongson
     mipsel-loongson)
-	exit 0;;
+	exit 77;;
     # FIXME: We don't support EFI floppy boot in grub-mkrescue
     *-efi)
-	exit 0;;
+	exit 77;;
     # FIXME: no floppy support
     i386-multiboot)
-	exit 0;;
+	exit 77;;
     # FIXME: QEMU firmware crashes when trying to boot from floppy
     sparc64-ieee1275)
-	exit 0;;
+	exit 77;;
     # FIXME: QEMU doesn't emulate SCSI floppies
     mipsel-arc | mips-arc)
-	exit 0;;
+	exit 77;;
     # PLATFORM: powerpc doesn't boot from floppy except OldWorld Macs which we don't support anyway
     powerpc-ieee1275)
-	exit 0;;
+	exit 77;;
 esac
 
 v=$(echo hello | "${grubshell}" --boot=fd --mkrescue-arg="--compress=xz --fonts= --locales= --themes= -no-pad")
diff --git a/tests/grub_cmd_date.in b/tests/grub_cmd_date.in
index 737a278e6..4903ad6cc 100644
--- a/tests/grub_cmd_date.in
+++ b/tests/grub_cmd_date.in
@@ -5,7 +5,7 @@ set -e
 
 # FIXME: OpenBIOS on sparc64 doesn't implement RTC
 if [ "${grub_modinfo_target_cpu}-${grub_modinfo_platform}" = sparc64-ieee1275 ]; then
-    exit 0
+    exit 77
 fi
 
 pdt="$(date -u +%s)"
diff --git a/tests/grub_cmd_set_date.in b/tests/grub_cmd_set_date.in
index aac120a6c..17673cd8a 100644
--- a/tests/grub_cmd_set_date.in
+++ b/tests/grub_cmd_set_date.in
@@ -6,15 +6,15 @@ set -e
 case "${grub_modinfo_target_cpu}-${grub_modinfo_platform}" in
     # FIXME: OpenBIOS on sparc64 doesn't implement RTC
     sparc64-ieee1275)
-	exit 0;;
+	exit 77;;
     # PLATFORM: ARC doesn't provide any way to set time
     *-arc)
-	exit 0;;
+	exit 77;;
     # PLATFORM: EMU doesn't provide any way to set time
     # Even if it did we'd need some kind of sandbox to avoid
     # modifying real system time.
     *-emu)
-	exit 0;;
+	exit 77;;
 esac
 
 out=$(cat <<EOF | @builddir@/grub-shell
diff --git a/tests/grub_cmd_sleep.in b/tests/grub_cmd_sleep.in
index 8797f6632..1a57fb388 100644
--- a/tests/grub_cmd_sleep.in
+++ b/tests/grub_cmd_sleep.in
@@ -5,7 +5,7 @@ set -e
 
 # FIXME: OpenBIOS on sparc64 doesn't implement RTC
 if [ "${grub_modinfo_target_cpu}-${grub_modinfo_platform}" = sparc64-ieee1275 ]; then
-    exit 0
+    exit 77
 fi
 
 # Compare RTC with interval timer.
diff --git a/tests/hddboot_test.in b/tests/hddboot_test.in
index ded2cde7b..764e0da1c 100644
--- a/tests/hddboot_test.in
+++ b/tests/hddboot_test.in
@@ -22,13 +22,13 @@ grubshell=@builddir@/grub-shell
 case "${grub_modinfo_target_cpu}-${grub_modinfo_platform}" in
     # PLATFORM: emu is different
     *-emu)
-	exit 0;;
+	exit 77;;
     # PLATFORM: Flash targets
     i386-qemu | i386-coreboot | mips-qemu_mips | mipsel-qemu_mips)
-	exit 0;;
+	exit 77;;
     # FIXME: currently grub-shell uses only -kernel for loongson
     mipsel-loongson)
-	exit 0;;
+	exit 77;;
 esac
 
 v=$(echo hello | "${grubshell}" --boot=hd)
diff --git a/tests/netboot_test.in b/tests/netboot_test.in
index b274f3e2d..510c9c34b 100644
--- a/tests/netboot_test.in
+++ b/tests/netboot_test.in
@@ -22,22 +22,22 @@ grubshell=@builddir@/grub-shell
 case "${grub_modinfo_target_cpu}-${grub_modinfo_platform}" in
     # PLATFORM: emu is different
     *-emu)
-	exit 0;;
+	exit 77;;
     # PLATFORM: Flash targets
     i386-qemu | i386-coreboot | mips-qemu_mips | mipsel-qemu_mips)
-	exit 0;;
+	exit 77;;
     # FIXME: currently grub-shell uses only -kernel for loongson
     mipsel-loongson)
-	exit 0;;
+	exit 77;;
     # FIXME: no rtl8139 support
     i386-multiboot)
-	exit 0;;
+	exit 77;;
     # FIXME: We don't fully support netboot on ARC
     *-arc)
-	exit 0;;
+	exit 77;;
     # FIXME: Many QEMU firmware have no netboot capability
     *-efi | i386-ieee1275 | powerpc-ieee1275 | sparc64-ieee1275)
-	exit 0;;
+	exit 77;;
 esac
 
 v=$(echo hello | "${grubshell}" --boot=net)
diff --git a/tests/ohci_test.in b/tests/ohci_test.in
index c72618656..741ad881f 100644
--- a/tests/ohci_test.in
+++ b/tests/ohci_test.in
@@ -22,16 +22,16 @@ grubshell=@builddir@/grub-shell
 case "${grub_modinfo_target_cpu}-${grub_modinfo_platform}" in
     # PLATFORM: Don't mess with real devices when OS is active
     *-emu)
-	exit 0;;
+	exit 77;;
     # FIXME: qemu gets bonito DMA wrong
     mipsel-loongson)
-	exit 0;;
+	exit 77;;
     # PLATFORM: no USB on ARC and qemu-mips platforms
     mips*-arc | mips*-qemu_mips)
-	exit 0;;
+	exit 77;;
     # FIXME: No native drivers are available for those
     powerpc-ieee1275 | sparc64-ieee1275 | arm*-efi)
-	exit 0;;
+	exit 77;;
 esac
 
 imgfile="`mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"`" || exit 99
diff --git a/tests/partmap_test.in b/tests/partmap_test.in
index 7906db43d..e72af9ce4 100644
--- a/tests/partmap_test.in
+++ b/tests/partmap_test.in
@@ -70,21 +70,21 @@ case "${grub_modinfo_target_cpu}-${grub_modinfo_platform}" in
     powerpc-ieee1275)
 	disk=ieee1275//pci@80000000/mac-io@4/ata-3@20000/disk@0
 	# FIXME: QEMU firmware has bugs which prevent it from accessing hard disk w/o recognised label.
-	exit 0
+	exit 77
 	;;
     sparc64-ieee1275)
 	disk=ieee1275//pci@1fe\,0/pci-ata@5/ide0@500/disk@0
 	# FIXME: QEMU firmware has bugs which prevent it from accessing hard disk w/o recognised label.
-	exit 0
+	exit 77
 	;;
     i386-ieee1275)
 	disk=ieee1275/d
 	# FIXME: QEMU firmware has bugs which prevent it from accessing hard disk w/o recognised label.
-	exit 0
+	exit 77
 	;;
     mips-arc)
 	# FIXME: ARC firmware has bugs which prevent it from accessing hard disk w/o dvh disklabel.
-	exit 0 ;;
+	exit 77 ;;
     mipsel-arc)
 	disk=arc/scsi0/disk0/rdisk0
 	;;
diff --git a/tests/pata_test.in b/tests/pata_test.in
index a69719bf5..4fee0b0fb 100644
--- a/tests/pata_test.in
+++ b/tests/pata_test.in
@@ -25,13 +25,13 @@ indisk=ata0
 case "${grub_modinfo_target_cpu}-${grub_modinfo_platform}" in
     # PLATFORM: Don't mess with real devices when OS is active
     *-emu)
-	exit 0;;
+	exit 77;;
     # PLATFORM: no ATA on ARC platforms (they use SCSI)
     *-arc)
-	exit 0;;
+	exit 77;;
     # FIXME: No native drivers are available for those
     powerpc-ieee1275 | sparc64-ieee1275 | arm*-efi)
-	exit 0;;
+	exit 77;;
     i386-ieee1275)
 	disk=hdb
 	indisk=ata1
diff --git a/tests/pseries_test.in b/tests/pseries_test.in
index 655eb4f3a..9b4090cf5 100644
--- a/tests/pseries_test.in
+++ b/tests/pseries_test.in
@@ -20,7 +20,7 @@ grubshell=@builddir@/grub-shell
 . "@builddir@/grub-core/modinfo.sh"
 
 if [ "${grub_modinfo_target_cpu}-${grub_modinfo_platform}" != powerpc-ieee1275 ]; then
-   exit 0
+   exit 77
 fi
 
 if [ "$(echo hello | "${grubshell}" --pseries --timeout=180 --boot=cd)" != "Hello World" ]; then
diff --git a/tests/uhci_test.in b/tests/uhci_test.in
index 7b8892c63..5aa5eb726 100644
--- a/tests/uhci_test.in
+++ b/tests/uhci_test.in
@@ -22,16 +22,16 @@ grubshell=@builddir@/grub-shell
 case "${grub_modinfo_target_cpu}-${grub_modinfo_platform}" in
     # PLATFORM: Don't mess with real devices when OS is active
     *-emu)
-	exit 0;;
+	exit 77;;
     # FIXME: qemu gets bonito DMA wrong
     mipsel-loongson)
-	exit 0;;
+	exit 77;;
     # PLATFORM: no USB on ARC and qemu-mips platforms
     mips*-arc | mips*-qemu_mips)
-	exit 0;;
+	exit 77;;
     # FIXME: No native drivers are available for those
     powerpc-ieee1275 | sparc64-ieee1275 | arm*-efi)
-	exit 0;;
+	exit 77;;
 esac
 
 imgfile="`mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"`" || exit 99