diff --git a/tests/btrfs_test.in b/tests/btrfs_test.in
index 84cfd95d8..900f56379 100644
--- a/tests/btrfs_test.in
+++ b/tests/btrfs_test.in
@@ -12,7 +12,7 @@ fi
 
 if ! which mkfs.btrfs >/dev/null 2>&1; then
    echo "mkfs.btrfs not installed; cannot test btrfs."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" btrfs
diff --git a/tests/cpio_test.in b/tests/cpio_test.in
index fb468564a..74759419e 100644
--- a/tests/cpio_test.in
+++ b/tests/cpio_test.in
@@ -4,7 +4,7 @@ set -ex
 
 if ! which cpio >/dev/null 2>&1; then
    echo "cpio not installed; cannot test cpio."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" cpio_bin
diff --git a/tests/erofs_test.in b/tests/erofs_test.in
index f8cf3bb8b..e0dec8d3a 100644
--- a/tests/erofs_test.in
+++ b/tests/erofs_test.in
@@ -4,7 +4,7 @@ set -ex
 
 if ! which mkfs.erofs >/dev/null 2>&1; then
    echo "mkfs.erofs not installed; cannot test erofs."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" erofs_compact
diff --git a/tests/exfat_test.in b/tests/exfat_test.in
index ae2b209a1..63300b8a5 100644
--- a/tests/exfat_test.in
+++ b/tests/exfat_test.in
@@ -12,7 +12,7 @@ fi
 
 if ! which mkfs.exfat >/dev/null 2>&1; then
    echo "mkfs.exfat not installed; cannot test exFAT."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" exfat
diff --git a/tests/ext234_test.in b/tests/ext234_test.in
index 2f8aafc9c..3761238db 100644
--- a/tests/ext234_test.in
+++ b/tests/ext234_test.in
@@ -12,17 +12,17 @@ fi
 
 if ! which mkfs.ext2 >/dev/null 2>&1; then
    echo "mkfs.ext2 not installed; cannot test ext2."
-   exit 77
+   exit 99
 fi
 
 if ! which mkfs.ext3 >/dev/null 2>&1; then
    echo "mkfs.ext3 not installed; cannot test ext3."
-   exit 77
+   exit 99
 fi
 
 if ! which mkfs.ext4 >/dev/null 2>&1; then
    echo "mkfs.ext4 not installed; cannot test ext4."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" ext2_old
diff --git a/tests/f2fs_test.in b/tests/f2fs_test.in
index 4d16c2fab..0896810ea 100644
--- a/tests/f2fs_test.in
+++ b/tests/f2fs_test.in
@@ -12,7 +12,7 @@ fi
 
 if ! which mkfs.f2fs >/dev/null 2>&1; then
  echo "mkfs.f2fs not installed; cannot test f2fs."
- exit 77
+ exit 99
 fi
 
 
diff --git a/tests/fat_test.in b/tests/fat_test.in
index 0e4b1ebae..966b2c9db 100644
--- a/tests/fat_test.in
+++ b/tests/fat_test.in
@@ -12,7 +12,7 @@ fi
 
 if ! which mkfs.vfat >/dev/null 2>&1; then
    echo "mkfs.vfat not installed; cannot test FAT."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" vfat16a
diff --git a/tests/grub_cmd_cryptomount.in b/tests/grub_cmd_cryptomount.in
index 97863c3e8..bcba7c74c 100644
--- a/tests/grub_cmd_cryptomount.in
+++ b/tests/grub_cmd_cryptomount.in
@@ -27,12 +27,12 @@ fi
 
 if ! which cryptsetup >/dev/null 2>&1; then
    echo "cryptsetup not installed; cannot test cryptomount."
-   exit 77
+   exit 99
 fi
 
 if ! which mkfs.vfat >/dev/null 2>&1; then
    echo "mkfs.vfat not installed; cannot test cryptomount."
-   exit 77
+   exit 99
 fi
 
 COMMON_OPTS='${V:+--debug=$V} --cs-opts="--pbkdf-force-iterations 1000"'
diff --git a/tests/gzcompress_test.in b/tests/gzcompress_test.in
index 471b6537e..0f80037fb 100644
--- a/tests/gzcompress_test.in
+++ b/tests/gzcompress_test.in
@@ -21,7 +21,7 @@ grubshell=@builddir@/grub-shell
 
 if ! which gzip >/dev/null 2>&1; then
    echo "gzip not installed; cannot test gzip compression."
-   exit 77
+   exit 99
 fi
 
 v=$(echo hello | "${grubshell}" --mkrescue-arg=--compress=gz)
diff --git a/tests/hfs_test.in b/tests/hfs_test.in
index fc0e0e75c..99432114f 100644
--- a/tests/hfs_test.in
+++ b/tests/hfs_test.in
@@ -12,7 +12,7 @@ fi
 
 if ! which mkfs.hfs >/dev/null 2>&1; then
    echo "mkfs.hfs not installed; cannot test HFS."
-   exit 77
+   exit 99
 fi
 
 if ! grep -q mac_roman /proc/modules && ! modprobe mac_roman; then
diff --git a/tests/hfsplus_test.in b/tests/hfsplus_test.in
index 7918a68bb..402d1cd66 100644
--- a/tests/hfsplus_test.in
+++ b/tests/hfsplus_test.in
@@ -12,7 +12,7 @@ fi
 
 if ! which mkfs.hfsplus >/dev/null 2>&1; then
    echo "mkfs.hfsplus not installed; cannot test hfsplus."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" hfsplus
diff --git a/tests/iso9660_test.in b/tests/iso9660_test.in
index 7a6816f94..a36f3022a 100644
--- a/tests/iso9660_test.in
+++ b/tests/iso9660_test.in
@@ -4,7 +4,7 @@ set -ex
 
 if ! which xorriso >/dev/null 2>&1; then
    echo "xorriso not installed; cannot test iso9660."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" joliet
diff --git a/tests/jfs_test.in b/tests/jfs_test.in
index b1c18e9b1..07f1ca193 100644
--- a/tests/jfs_test.in
+++ b/tests/jfs_test.in
@@ -12,7 +12,7 @@ fi
 
 if ! which mkfs.jfs >/dev/null 2>&1; then
    echo "mkfs.jfs not installed; cannot test JFS."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" jfs
diff --git a/tests/luks1_test.in b/tests/luks1_test.in
index 3344746c1..1df4a2f5f 100644
--- a/tests/luks1_test.in
+++ b/tests/luks1_test.in
@@ -12,12 +12,12 @@ fi
 
 if ! which mkfs.ext2 >/dev/null 2>&1; then
    echo "mkfs.ext2 not installed; cannot test luks."
-   exit 77
+   exit 99
 fi
 
 if ! which cryptsetup >/dev/null 2>&1; then
    echo "cryptsetup not installed; cannot test luks."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" luks1
diff --git a/tests/luks2_test.in b/tests/luks2_test.in
index 5368698f8..75ac2c191 100644
--- a/tests/luks2_test.in
+++ b/tests/luks2_test.in
@@ -12,12 +12,12 @@ fi
 
 if ! which mkfs.ext2 >/dev/null 2>&1; then
    echo "mkfs.ext2 not installed; cannot test luks2."
-   exit 77
+   exit 99
 fi
 
 if ! which cryptsetup >/dev/null 2>&1; then
    echo "cryptsetup not installed; cannot test luks2."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" luks2
diff --git a/tests/lzocompress_test.in b/tests/lzocompress_test.in
index 50145dd0c..a89d014e9 100644
--- a/tests/lzocompress_test.in
+++ b/tests/lzocompress_test.in
@@ -21,7 +21,7 @@ grubshell=@builddir@/grub-shell
 
 if ! which lzop >/dev/null 2>&1; then
    echo "lzop not installed; cannot test lzo compression."
-   exit 77
+   exit 99
 fi
 
 v=$(echo hello | "${grubshell}" --mkrescue-arg=--compress=lzo)
diff --git a/tests/minixfs_test.in b/tests/minixfs_test.in
index 0d28a7226..780f699fa 100644
--- a/tests/minixfs_test.in
+++ b/tests/minixfs_test.in
@@ -12,7 +12,7 @@ fi
 
 if ! which mkfs.minix >/dev/null 2>&1; then
    echo "mkfs.minix not installed; cannot test minixfs."
-   exit 77
+   exit 99
 fi
 
 if ! mkfs.minix -h | grep -- -v > /dev/null; then
diff --git a/tests/nilfs2_test.in b/tests/nilfs2_test.in
index 84b8b1a0b..95ec7c3b4 100644
--- a/tests/nilfs2_test.in
+++ b/tests/nilfs2_test.in
@@ -12,7 +12,7 @@ fi
 
 if ! which mkfs.nilfs2 >/dev/null 2>&1; then
    echo "mkfs.nilfs2 not installed; cannot test nilfs2."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" nilfs2
diff --git a/tests/ntfs_test.in b/tests/ntfs_test.in
index 5b1bebe16..b6432d2a1 100644
--- a/tests/ntfs_test.in
+++ b/tests/ntfs_test.in
@@ -12,12 +12,12 @@ fi
 
 if ! which mkfs.ntfs >/dev/null 2>&1; then
    echo "mkfs.ntfs not installed; cannot test ntfs."
-   exit 77
+   exit 99
 fi
 
 if ! which setfattr >/dev/null 2>&1; then
    echo "setfattr not installed; cannot test ntfs."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" ntfs
diff --git a/tests/partmap_test.in b/tests/partmap_test.in
index 8e12cf7ec..6157a8537 100644
--- a/tests/partmap_test.in
+++ b/tests/partmap_test.in
@@ -100,7 +100,7 @@ esac
 
 if ! which ${parted} >/dev/null 2>&1; then
    echo "${parted} not installed; cannot test partmap"
-   exit 77
+   exit 99
 fi
 
 imgfile="`mktemp "${TMPDIR:-/tmp}/tmp.XXXXXXXXXX"`" || exit 99
diff --git a/tests/reiserfs_test.in b/tests/reiserfs_test.in
index 48d3ab4cc..6f8ebcf29 100644
--- a/tests/reiserfs_test.in
+++ b/tests/reiserfs_test.in
@@ -12,7 +12,7 @@ fi
 
 if ! which mkfs.reiserfs >/dev/null 2>&1; then
    echo "mkfs.reiserfs not installed; cannot test reiserfs."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" reiserfs
diff --git a/tests/romfs_test.in b/tests/romfs_test.in
index 2c66cde34..e3b4a0210 100644
--- a/tests/romfs_test.in
+++ b/tests/romfs_test.in
@@ -4,7 +4,7 @@ set -ex
 
 if ! which genromfs >/dev/null 2>&1; then
    echo "genromfs not installed; cannot test romfs."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" romfs
diff --git a/tests/squashfs_test.in b/tests/squashfs_test.in
index b973f7bac..36f8e9735 100644
--- a/tests/squashfs_test.in
+++ b/tests/squashfs_test.in
@@ -4,7 +4,7 @@ set -ex
 
 if ! which mksquashfs >/dev/null 2>&1; then
    echo "mksquashfs not installed; cannot test squashfs."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" squash4_gzip
diff --git a/tests/tar_test.in b/tests/tar_test.in
index eafb6649d..4f0c697ac 100644
--- a/tests/tar_test.in
+++ b/tests/tar_test.in
@@ -4,7 +4,7 @@ set -ex
 
 if ! which tar >/dev/null 2>&1; then
    echo "tar not installed; cannot test tar."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" tarfs
diff --git a/tests/tpm2_key_protector_test.in b/tests/tpm2_key_protector_test.in
index 6dbd69787..5dd86d6ee 100644
--- a/tests/tpm2_key_protector_test.in
+++ b/tests/tpm2_key_protector_test.in
@@ -41,7 +41,7 @@ fi
 
 if ! command -v cryptsetup >/dev/null 2>&1; then
    echo "cryptsetup not installed; cannot test tpm2."
-   exit 77
+   exit 99
 fi
 
 if ! grep -q tpm_vtpm_proxy /proc/modules && ! modprobe tpm_vtpm_proxy; then
@@ -51,7 +51,7 @@ fi
 
 if ! command -v swtpm >/dev/null 2>&1; then
    echo "swtpm not installed; cannot test tpm2."
-   exit 77
+   exit 99
 fi
 
 if ! command -v tpm2_startup >/dev/null 2>&1; then
diff --git a/tests/udf_test.in b/tests/udf_test.in
index b84d0b674..0723b3be0 100644
--- a/tests/udf_test.in
+++ b/tests/udf_test.in
@@ -12,7 +12,7 @@ fi
 
 if ! which mkudffs >/dev/null 2>&1; then
    echo "mkudffs not installed; cannot test UDF."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" udf
diff --git a/tests/xfs_test.in b/tests/xfs_test.in
index d6b3ab908..2c9e6e348 100644
--- a/tests/xfs_test.in
+++ b/tests/xfs_test.in
@@ -12,7 +12,7 @@ fi
 
 if ! which mkfs.xfs >/dev/null 2>&1; then
    echo "mkfs.xfs not installed; cannot test xfs."
-   exit 77
+   exit 99
 fi
 
 
diff --git a/tests/xzcompress_test.in b/tests/xzcompress_test.in
index f0ac52e2d..62f0564db 100644
--- a/tests/xzcompress_test.in
+++ b/tests/xzcompress_test.in
@@ -21,7 +21,7 @@ grubshell=@builddir@/grub-shell
 
 if ! which xz >/dev/null 2>&1; then
    echo "xz not installed; cannot test xz compression."
-   exit 77
+   exit 99
 fi
 
 v=$(echo hello | "${grubshell}" --mkrescue-arg=--compress=xz)
diff --git a/tests/zfs_test.in b/tests/zfs_test.in
index cd547b4d2..462a9b95f 100644
--- a/tests/zfs_test.in
+++ b/tests/zfs_test.in
@@ -12,7 +12,7 @@ fi
 
 if ! which zpool >/dev/null 2>&1; then
    echo "zpool not installed; cannot test zfs."
-   exit 77
+   exit 99
 fi
 
 "@builddir@/grub-fs-tester" zfs