diff --git a/align/test-virt-alignment-scan.sh b/align/test-virt-alignment-scan.sh
index 7568f2326..ab44c2695 100755
--- a/align/test-virt-alignment-scan.sh
+++ b/align/test-virt-alignment-scan.sh
@@ -18,7 +18,7 @@
 
 export LANG=C
 
-$VG virt-alignment-scan -a ../test-data/phony-guests/fedora.img
+$VG virt-alignment-scan --format=raw -a ../test-data/phony-guests/fedora.img
 r=$?
 
 # 0, 2 and 3 are reasonable non-error exit codes.  Others are errors.
diff --git a/cat/test-virt-cat.sh b/cat/test-virt-cat.sh
index fc055d5f9..14b4a65eb 100755
--- a/cat/test-virt-cat.sh
+++ b/cat/test-virt-cat.sh
@@ -20,11 +20,11 @@ export LANG=C
 set -e
 
 # Read out the test files from the image using virt-cat.
-if [ "$($VG virt-cat ../test-data/phony-guests/fedora.img /etc/test1)" != "abcdefg" ]; then
+if [ "$($VG virt-cat --format=raw -a ../test-data/phony-guests/fedora.img /etc/test1)" != "abcdefg" ]; then
     echo "$0: error: mismatch in file test1"
     exit 1
 fi
-if [ "$($VG virt-cat ../test-data/phony-guests/fedora.img /etc/test2)" != "" ]; then
+if [ "$($VG virt-cat --format=raw -a ../test-data/phony-guests/fedora.img /etc/test2)" != "" ]; then
     echo "$0: error: mismatch in file test2"
     exit 1
 fi
diff --git a/cat/test-virt-filesystems.sh b/cat/test-virt-filesystems.sh
index 6f13bd79d..6c300dff6 100755
--- a/cat/test-virt-filesystems.sh
+++ b/cat/test-virt-filesystems.sh
@@ -19,7 +19,7 @@
 export LANG=C
 set -e
 
-output="$($VG virt-filesystems -a ../test-data/phony-guests/fedora.img | sort)"
+output="$($VG virt-filesystems --format=raw -a ../test-data/phony-guests/fedora.img | sort)"
 expected="/dev/VG/LV1
 /dev/VG/LV2
 /dev/VG/LV3
@@ -32,7 +32,7 @@ if [ "$output" != "$expected" ]; then
     exit 1
 fi
 
-output="$($VG virt-filesystems -a ../test-data/phony-guests/fedora.img --all --long --uuid -h --no-title | awk '{print $1}' | sort -u)"
+output="$($VG virt-filesystems --format=raw -a ../test-data/phony-guests/fedora.img --all --long --uuid -h --no-title | awk '{print $1}' | sort -u)"
 expected="/dev/VG
 /dev/VG/LV1
 /dev/VG/LV2
diff --git a/cat/test-virt-log.sh b/cat/test-virt-log.sh
index c1bf3e71a..4e08115ed 100755
--- a/cat/test-virt-log.sh
+++ b/cat/test-virt-log.sh
@@ -47,7 +47,7 @@ for f in ../test-data/phony-guests/{fedora,debian,ubuntu}.img; do
         echo
         continue
     fi
-    $VG virt-log -a "$f" &> $tmpfile
+    $VG virt-log --format=raw -a "$f" &> $tmpfile
     cat $tmpfile
     echo
 done
diff --git a/cat/test-virt-ls.sh b/cat/test-virt-ls.sh
index 4ea800864..4b7d927bc 100755
--- a/cat/test-virt-ls.sh
+++ b/cat/test-virt-ls.sh
@@ -20,7 +20,7 @@ export LANG=C
 set -e
 
 # Read out the test directory using virt-ls.
-if [ "$($VG virt-ls ../test-data/phony-guests/fedora.img /bin)" != "ls
+if [ "$($VG virt-ls --format=raw -a ../test-data/phony-guests/fedora.img /bin)" != "ls
 test1
 test2
 test3
@@ -33,7 +33,7 @@ test7" ]; then
 fi
 
 # Try the -lR option.
-output="$($VG virt-ls -lR ../test-data/phony-guests/fedora.img /boot | awk '{print $1 $2 $4}')"
+output="$($VG virt-ls -lR --format=raw -a ../test-data/phony-guests/fedora.img /boot | awk '{print $1 $2 $4}')"
 expected="d0755/boot
 d0755/boot/grub
 -0644/boot/grub/grub.conf
diff --git a/customize/test-virt-customize.sh b/customize/test-virt-customize.sh
index 00d1978b3..f98eccd31 100755
--- a/customize/test-virt-customize.sh
+++ b/customize/test-virt-customize.sh
@@ -26,7 +26,7 @@ for f in ../test-data/phony-guests/{debian,fedora,ubuntu}.img; do
     # Ignore zero-sized windows.img if ntfs-3g is not installed.
     if [ -s "$f" ]; then
         # Add --no-network so UML works.
-	$VG virt-customize -n -a $f \
+	$VG virt-customize -n --format=raw -a $f \
             --no-network \
             --write /etc/motd:HELLO \
             --chmod 0600:/etc/motd \
diff --git a/df/test-virt-df.sh b/df/test-virt-df.sh
index 0c2fa6b72..cd068e929 100755
--- a/df/test-virt-df.sh
+++ b/df/test-virt-df.sh
@@ -20,7 +20,7 @@ export LANG=C
 set -e
 
 # Run virt-df.
-output=$($VG virt-df ../test-data/phony-guests/fedora.img)
+output=$($VG virt-df --format=raw -a ../test-data/phony-guests/fedora.img)
 
 # Check title is the first line.
 if [[ ! $output =~ ^Filesystem.* ]]; then
diff --git a/diff/test-virt-diff.sh b/diff/test-virt-diff.sh
index d15804377..5a635150d 100755
--- a/diff/test-virt-diff.sh
+++ b/diff/test-virt-diff.sh
@@ -36,12 +36,12 @@ guestfish -- \
   disk-create fedora.qcow2 qcow2 -1 \
     backingfile:../test-data/phony-guests/fedora.img backingformat:raw
 
-guestfish -a fedora.qcow2 -i <<EOF
+guestfish --format=qcow2 -a fedora.qcow2 -i <<EOF
 touch /diff
 write-append /etc/motd "Testing virt-diff\n"
 EOF
 
-output="$($VG virt-diff -a ../test-data/phony-guests/fedora.img -A fedora.qcow2)"
+output="$($VG virt-diff --format=raw -a ../test-data/phony-guests/fedora.img --format=qcow2 -A fedora.qcow2)"
 
 expected="\
 + - 0644          0 /diff
diff --git a/edit/test-virt-edit.sh b/edit/test-virt-edit.sh
index bac275446..e84838136 100755
--- a/edit/test-virt-edit.sh
+++ b/edit/test-virt-edit.sh
@@ -35,7 +35,7 @@ guestfish -- \
 # Edit interactively.  We have to simulate this by setting $EDITOR.
 # The command will be: echo newline >> /tmp/file
 export EDITOR='echo newline >>'
-virt-edit -a test.qcow2 /etc/test3
+virt-edit --format=qcow2 -a test.qcow2 /etc/test3
 if [ "$(virt-cat -a test.qcow2 /etc/test3)" != "a
 b
 c
@@ -50,7 +50,7 @@ unset EDITOR
 
 # Edit non-interactively, only if we have 'perl' binary.
 if perl --version >/dev/null 2>&1; then
-    virt-edit -a test.qcow2 /etc/test3 -e 's/^[a-f]/$lineno/'
+    virt-edit --format=qcow2 -a test.qcow2 /etc/test3 -e 's/^[a-f]/$lineno/'
     if [ "$(virt-cat -a test.qcow2 /etc/test3)" != "1
 2
 3
@@ -65,7 +65,7 @@ fi
 
 # Verify the mode of /etc/test3 is still 0600 and the UID:GID is 10:11.
 # See test-data/phony-guests/make-fedora-img.pl and RHBZ#788641.
-if [ "$(guestfish -i -a test.qcow2 --ro lstat /etc/test3 | grep -E '^(mode|uid|gid):' | sort)" != "gid: 11
+if [ "$(guestfish -i --format=qcow2 -a test.qcow2 --ro lstat /etc/test3 | grep -E '^(mode|uid|gid):' | sort)" != "gid: 11
 mode: 33152
 uid: 10" ]; then
     echo "$0: error: editing /etc/test3 did not preserve permissions or ownership"
diff --git a/fish/test-copy.sh b/fish/test-copy.sh
index d144291ad..f375bebe3 100755
--- a/fish/test-copy.sh
+++ b/fish/test-copy.sh
@@ -63,7 +63,7 @@ fi
 
 mkdir test-copy-copy
 
-$VG guestfish --ro -a test-copy.img -m /dev/sda1 <<EOF
+$VG guestfish --ro --format=raw -a test-copy.img -m /dev/sda1 <<EOF
 copy-out /data/test-copy-original test-copy-copy
 EOF
 
diff --git a/fish/test-inspect.sh b/fish/test-inspect.sh
index 342504ce6..1a47dd266 100755
--- a/fish/test-inspect.sh
+++ b/fish/test-inspect.sh
@@ -18,4 +18,4 @@
 
 set -e
 
-$VG guestfish --ro -a ../test-data/phony-guests/fedora.img -i exit
+$VG guestfish --ro --format=raw -a ../test-data/phony-guests/fedora.img -i exit
diff --git a/fish/test-run.sh b/fish/test-run.sh
index 9b5f13f0f..237ecf769 100755
--- a/fish/test-run.sh
+++ b/fish/test-run.sh
@@ -18,4 +18,4 @@
 
 set -e
 
-$VG guestfish --ro -a ../test-data/phony-guests/fedora.img run
+$VG guestfish --ro --format=raw -a ../test-data/phony-guests/fedora.img run
diff --git a/format/test-virt-format.sh b/format/test-virt-format.sh
index 2383c71cd..bca0c0514 100755
--- a/format/test-virt-format.sh
+++ b/format/test-virt-format.sh
@@ -29,9 +29,9 @@ rm -f test-virt-format.img
 
 $VG guestfish -N test-virt-format.img=bootrootlv exit
 
-$VG virt-format --filesystem=ext3 -a test-virt-format.img
+$VG virt-format --filesystem=ext3 --format=raw -a test-virt-format.img
 
-if [ "$($VG virt-filesystems -a test-virt-format.img)" != "/dev/sda1" ]; then
+if [ "$($VG virt-filesystems --format=raw -a test-virt-format.img)" != "/dev/sda1" ]; then
     echo "$0: unexpected output after using virt-format"
     exit 1
 fi
diff --git a/fuse/test-fuse-umount-race.sh b/fuse/test-fuse-umount-race.sh
index e10a244af..3c85f17ea 100755
--- a/fuse/test-fuse-umount-race.sh
+++ b/fuse/test-fuse-umount-race.sh
@@ -57,7 +57,7 @@ guestfish -- \
       backingfile:../test-data/phony-guests/fedora.img backingformat:raw
 
 mkdir mp
-./guestmount -a test.qcow2 -m /dev/VG/Root --pid-file test.pid mp
+./guestmount --format=qcow2 -a test.qcow2 -m /dev/VG/Root --pid-file test.pid mp
 cp $0 mp/test-umount
 
 # Save the PID of guestmount.
@@ -82,7 +82,7 @@ fi
 # It should now be safe to copy and read the disk image.
 cp test.qcow2 test-copy.qcow2
 
-if [ "$(guestfish -a test-copy.qcow2 --ro -i is-file /test-umount)" != "true" ]; then
+if [ "$(guestfish --format=qcow2 -a test-copy.qcow2 --ro -i is-file /test-umount)" != "true" ]; then
     echo "$0: test failed"
     exit 1
 fi
diff --git a/inspector/test-virt-inspector.sh b/inspector/test-virt-inspector.sh
index 0dc209df6..13794c879 100755
--- a/inspector/test-virt-inspector.sh
+++ b/inspector/test-virt-inspector.sh
@@ -33,7 +33,7 @@ for f in ../test-data/phony-guests/{debian,fedora,ubuntu,archlinux,coreos,window
     # Ignore zero-sized windows.img if ntfs-3g is not installed.
     if [ -s "$f" ]; then
         b=$(basename "$f" .xml)
-	$VG virt-inspector -a "$f" > "actual-$b.xml"
+	$VG virt-inspector --format=raw -a "$f" > "actual-$b.xml"
         # This 'diff' command will fail (because of -e option) if there
         # are any differences.
         diff -ur $diff_ignore "expected-$b.xml" "actual-$b.xml"
diff --git a/rescue/test-virt-rescue-suggest.sh b/rescue/test-virt-rescue-suggest.sh
index e49b38f24..a8b41e22c 100755
--- a/rescue/test-virt-rescue-suggest.sh
+++ b/rescue/test-virt-rescue-suggest.sh
@@ -28,7 +28,7 @@ fi
 
 rm -f virt-rescue-suggest.out
 
-$VG virt-rescue --suggest "$guest" |
+$VG virt-rescue --suggest --format=raw -a "$guest" |
   grep '^mount ' |
   sed -r 's,/dev/[abce-ln-z]+d,/dev/sd,' > virt-rescue-suggest.out
 
diff --git a/sparsify/test-virt-sparsify-in-place.sh b/sparsify/test-virt-sparsify-in-place.sh
index 456ae3a6f..8797c27a3 100755
--- a/sparsify/test-virt-sparsify-in-place.sh
+++ b/sparsify/test-virt-sparsify-in-place.sh
@@ -49,7 +49,7 @@ EOF
 
 size_before=$(du -s test-virt-sparsify-in-place.img | awk '{print $1}')
 
-$VG virt-sparsify --debug-gc --in-place test-virt-sparsify-in-place.img || {
+$VG virt-sparsify --debug-gc --in-place --format raw test-virt-sparsify-in-place.img || {
     if [ "$?" -eq 3 ]; then
         rm test-virt-sparsify-in-place.img
         echo "$0: discard not supported in virt-sparsify"
diff --git a/sparsify/test-virt-sparsify.sh b/sparsify/test-virt-sparsify.sh
index 040442449..7d18bf684 100755
--- a/sparsify/test-virt-sparsify.sh
+++ b/sparsify/test-virt-sparsify.sh
@@ -42,7 +42,7 @@ rm /boot/big
 umount-all
 EOF
 
-$VG virt-sparsify --debug-gc test-virt-sparsify-1.img --convert qcow2 test-virt-sparsify-2.img
+$VG virt-sparsify --debug-gc --format raw test-virt-sparsify-1.img --convert qcow2 test-virt-sparsify-2.img
 
 size_before=$(du -s test-virt-sparsify-1.img | awk '{print $1}')
 size_after=$(du -s test-virt-sparsify-2.img | awk '{print $1}')
diff --git a/sysprep/test-virt-sysprep-passwords.sh b/sysprep/test-virt-sysprep-passwords.sh
index ba34b0c5d..5e185e398 100755
--- a/sysprep/test-virt-sysprep-passwords.sh
+++ b/sysprep/test-virt-sysprep-passwords.sh
@@ -58,6 +58,7 @@ echo 123456 > password
 # Run virt-sysprep password operation.
 
 virt-sysprep \
+    --format qcow2 \
     -a passwords.qcow2 \
     --enable customize \
     --password test01:password:123456 \
diff --git a/sysprep/test-virt-sysprep-script.sh b/sysprep/test-virt-sysprep-script.sh
index 409a9b766..49d075640 100755
--- a/sysprep/test-virt-sysprep-script.sh
+++ b/sysprep/test-virt-sysprep-script.sh
@@ -32,7 +32,7 @@ fi
 
 # Check that multiple scripts can run.
 rm -f stamp-script1.sh stamp-script2.sh stamp-script4.sh
-if ! virt-sysprep -q -n -a ../test-data/phony-guests/fedora.img --enable script \
+if ! virt-sysprep -q -n --format raw -a ../test-data/phony-guests/fedora.img --enable script \
         --script $abs_srcdir/script1.sh --script $abs_srcdir/script2.sh; then
     echo "$0: virt-sysprep wasn't expected to exit with error."
     exit 1
@@ -43,19 +43,19 @@ if [ ! -f stamp-script1.sh -o ! -f stamp-script2.sh ]; then
 fi
 
 # Check that if a script fails, virt-sysprep exits with an error.
-if virt-sysprep -q -n -a ../test-data/phony-guests/fedora.img --enable script \
+if virt-sysprep -q -n --format raw -a ../test-data/phony-guests/fedora.img --enable script \
         --script $abs_srcdir/script3.sh; then
     echo "$0: virt-sysprep didn't exit with an error."
     exit 1
 fi
 
 # Check that virt-sysprep uses a new temporary directory every time.
-if ! virt-sysprep -q -n -a ../test-data/phony-guests/fedora.img --enable script \
+if ! virt-sysprep -q -n --format raw -a ../test-data/phony-guests/fedora.img --enable script \
         --script $abs_srcdir/script4.sh; then
     echo "$0: virt-sysprep (script4.sh, try #1) wasn't expected to exit with error."
     exit 1
 fi
-if ! virt-sysprep -q -n -a ../test-data/phony-guests/fedora.img --enable script \
+if ! virt-sysprep -q -n --format raw -a ../test-data/phony-guests/fedora.img --enable script \
         --script $abs_srcdir/script4.sh; then
     echo "$0: virt-sysprep (script4.sh, try #2) wasn't expected to exit with error."
     exit 1
diff --git a/sysprep/test-virt-sysprep.sh b/sysprep/test-virt-sysprep.sh
index e9dd9a9b3..802f9b69e 100755
--- a/sysprep/test-virt-sysprep.sh
+++ b/sysprep/test-virt-sysprep.sh
@@ -41,7 +41,7 @@ for f in ../test-data/phony-guests/{debian,fedora,ubuntu,windows}.img; do
     # Ignore zero-sized windows.img if ntfs-3g is not installed.
     if [ -s "$f" ]; then
 	echo "Running virt-sysprep on $f ..."
-	$VG virt-sysprep -q -n --enable "$operations" -a $f
+	$VG virt-sysprep -q -n --enable "$operations" --format raw -a $f
 	echo
     fi
 done
diff --git a/test-data/phony-guests/make-fedora-img.pl b/test-data/phony-guests/make-fedora-img.pl
index 192f48f23..5a6adab25 100755
--- a/test-data/phony-guests/make-fedora-img.pl
+++ b/test-data/phony-guests/make-fedora-img.pl
@@ -62,7 +62,7 @@ EOF
 
   $g->disk_create ("fedora.img-t", "raw", $IMAGE_SIZE);
 
-  $g->add_drive ("fedora.img-t");
+  $g->add_drive ("fedora.img-t", format => "raw");
   $g->launch ();
 
   $g->part_init ('/dev/sda', 'mbr');
@@ -87,7 +87,7 @@ EOF
 
   foreach my $img (@images) {
       $g->disk_create ($img, "raw", $IMAGE_SIZE);
-      $g->add_drive ($img);
+      $g->add_drive ($img, format => "raw");
   }
 
   $g->launch ();
@@ -137,7 +137,7 @@ EOF
 
   $g->disk_create ("fedora-btrfs.img-t", "raw", $IMAGE_SIZE);
 
-  $g->add_drive ("fedora-btrfs.img-t");
+  $g->add_drive ("fedora-btrfs.img-t", format => "raw");
   $g->launch ();
 
   $g->part_init ('/dev/sda', 'mbr');
diff --git a/tests/gdisk/test-expand-gpt.pl b/tests/gdisk/test-expand-gpt.pl
index 637b90e9b..4d647f1af 100755
--- a/tests/gdisk/test-expand-gpt.pl
+++ b/tests/gdisk/test-expand-gpt.pl
@@ -25,7 +25,7 @@ sub tests {
 
 	foreach ("gpt", "mbr") {
 		$g->disk_create ("disk_$_.img", "qcow2", 50 * 1024 * 1024);
-		$g->add_drive ("disk_$_.img");
+		$g->add_drive ("disk_$_.img", format => "qcow2");
 	}
 
 	$g->launch ();
@@ -40,7 +40,7 @@ sub tests {
 	$g = Sys::Guestfs->new ();
 
 	foreach ("gpt", "mbr") {
-		$g->add_drive ("disk_$_.img");
+		$g->add_drive ("disk_$_.img", format => "qcow2");
 	}
 
 	$g->launch ();
diff --git a/tests/md/test-inspect-fstab-md.sh b/tests/md/test-inspect-fstab-md.sh
index 6c1842f57..3c25dac6f 100755
--- a/tests/md/test-inspect-fstab-md.sh
+++ b/tests/md/test-inspect-fstab-md.sh
@@ -32,7 +32,7 @@ rm -f inspect-fstab-md-{1,2}.img inspect-fstab-md.fstab inspect-fstab-md.output
 cp ../../test-data/phony-guests/fedora-md1.img inspect-fstab-md-1.img
 cp ../../test-data/phony-guests/fedora-md2.img inspect-fstab-md-2.img
 
-guestfish -i inspect-fstab-md-[12].img <<'EOF' | sort > inspect-fstab-md.output
+guestfish -i --format=raw -a inspect-fstab-md-1.img --format=raw -a inspect-fstab-md-2.img <<'EOF' | sort > inspect-fstab-md.output
   exists /boot/grub/grub.conf
 EOF
 
@@ -47,13 +47,13 @@ cat <<'EOF' > inspect-fstab-md.fstab
 /dev/md/boot /boot ext2 default 0 0
 EOF
 
-guestfish -a inspect-fstab-md-1.img -a inspect-fstab-md-2.img <<'EOF'
+guestfish --format=raw -a inspect-fstab-md-1.img --format=raw -a inspect-fstab-md-2.img <<'EOF'
   run
   mount /dev/VG/Root /
   upload inspect-fstab-md.fstab /etc/fstab
 EOF
 
-guestfish -i inspect-fstab-md-[12].img <<'EOF' | sort > inspect-fstab-md.output
+guestfish -i --format=raw -a inspect-fstab-md-1.img --format=raw -a inspect-fstab-md-2.img <<'EOF' | sort > inspect-fstab-md.output
   exists /boot/grub/grub.conf
 EOF
 
diff --git a/tests/md/test-inspect-fstab.sh b/tests/md/test-inspect-fstab.sh
index 007ea0840..07391938f 100755
--- a/tests/md/test-inspect-fstab.sh
+++ b/tests/md/test-inspect-fstab.sh
@@ -55,14 +55,14 @@ cat <<'EOF' > inspect-fstab.fstab
 /dev/disk/by-id/ata-QEMU_HARDDISK_QM00001-part3 /id3 ext2 default 0 0
 EOF
 
-guestfish -a inspect-fstab-1.qcow2 <<'EOF'
+guestfish --format=qcow2 -a inspect-fstab-1.qcow2 <<'EOF'
   run
   mount /dev/VG/Root /
   upload inspect-fstab.fstab /etc/fstab
 EOF
 
 # This will give a warning, but should not fail.
-guestfish -a inspect-fstab-1.qcow2 -i <<'EOF' | sort | $canonical > inspect-fstab.output
+guestfish --format=qcow2 -a inspect-fstab-1.qcow2 -i <<'EOF' | sort | $canonical > inspect-fstab.output
   inspect-get-mountpoints /dev/VG/Root
 EOF
 
@@ -87,7 +87,7 @@ cat <<'EOF' > inspect-fstab.fstab
 /dev/xvdg1 /boot ext2 default 0 0
 EOF
 
-guestfish -a inspect-fstab-1.qcow2 <<'EOF'
+guestfish --format=qcow2 -a inspect-fstab-1.qcow2 <<'EOF'
   run
   mount /dev/VG/Root /
   upload inspect-fstab.fstab /etc/fstab
@@ -118,7 +118,7 @@ cat <<'EOF' > inspect-fstab.fstab
 /dev/cciss/c1d3 /var ext2 default 0 0
 EOF
 
-guestfish -a inspect-fstab-1.qcow2 <<'EOF'
+guestfish --format=qcow2 -a inspect-fstab-1.qcow2 <<'EOF'
   run
   mount /dev/VG/Root /
   upload inspect-fstab.fstab /etc/fstab
diff --git a/tests/md/test-list-md-devices.sh b/tests/md/test-list-md-devices.sh
index 5a9cbe814..3019f33eb 100755
--- a/tests/md/test-list-md-devices.sh
+++ b/tests/md/test-list-md-devices.sh
@@ -49,7 +49,7 @@ fi
 
 # Ensure list-md-devices now returns the newly created md device
 output=$(
-guestfish -a list-md-devices-1.img -a list-md-devices-2.img <<EOF
+guestfish --format=raw -a list-md-devices-1.img --format=raw -a list-md-devices-2.img <<EOF
 run
 list-md-devices
 EOF
diff --git a/tests/mountable/test-mountable-inspect.sh b/tests/mountable/test-mountable-inspect.sh
index ebef0c613..fcc184d20 100755
--- a/tests/mountable/test-mountable-inspect.sh
+++ b/tests/mountable/test-mountable-inspect.sh
@@ -48,7 +48,7 @@ guestfish -- \
 
 # Test that basic inspection works and the expected filesystems are
 # found
-guestfish -a test.qcow2 -i <<'EOF' | sort | $canonical > test.output
+guestfish --format=qcow2 -a test.qcow2 -i <<'EOF' | sort | $canonical > test.output
   inspect-get-roots | head -1 > root.tmp
   <! echo inspect-get-mountpoints "`cat root.tmp`"
 EOF
@@ -62,7 +62,7 @@ if [ "$(cat test.output)" != "/: btrfsvol:/dev/sda2/root
 fi
 
 # Additional sanity check: did we get the release name right?
-guestfish -a test.qcow2 -i <<'EOF' > test.output
+guestfish --format=qcow2 -a test.qcow2 -i <<'EOF' > test.output
   inspect-get-roots | head -1 > root.tmp
   <! echo inspect-get-product-name "`cat root.tmp`"
 EOF
diff --git a/tests/ntfs/test-ntfscat.sh b/tests/ntfs/test-ntfscat.sh
index 5cfdd9562..50f4dca00 100755
--- a/tests/ntfs/test-ntfscat.sh
+++ b/tests/ntfs/test-ntfscat.sh
@@ -39,7 +39,7 @@ if [ ! -s ../../test-data/phony-guests/windows.img ]; then
 fi
 
 # download Master File Table ($MFT).
-guestfish --ro -a ../../test-data/phony-guests/windows.img <<EOF
+guestfish --ro --format=raw -a ../../test-data/phony-guests/windows.img <<EOF
 run
 ntfscat-i /dev/sda2 0 test-mft.bin
 EOF
diff --git a/tests/ntfs/test-ntfsclone.sh b/tests/ntfs/test-ntfsclone.sh
index 668ed8a67..b403670cc 100755
--- a/tests/ntfs/test-ntfsclone.sh
+++ b/tests/ntfs/test-ntfsclone.sh
@@ -39,7 +39,7 @@ if [ ! -s ../../test-data/phony-guests/windows.img ]; then
 fi
 
 # Export the filesystems to the backup file.
-guestfish --ro -a ../../test-data/phony-guests/windows.img <<EOF
+guestfish --ro --format=raw -a ../../test-data/phony-guests/windows.img <<EOF
 run
 ntfsclone-out /dev/sda1 ntfsclone-backup1 preservetimestamps:true force:true
 ntfsclone-out /dev/sda2 ntfsclone-backup2 metadataonly:true ignorefscheck:true
diff --git a/tests/regressions/rhbz1011907-1165785.sh b/tests/regressions/rhbz1011907-1165785.sh
index f45ae3c99..ac3b49dc0 100755
--- a/tests/regressions/rhbz1011907-1165785.sh
+++ b/tests/regressions/rhbz1011907-1165785.sh
@@ -35,7 +35,7 @@ rm -f rhbz1011907-1165785-loop.img rhbz1011907-1165785.img
 qemu-img create rhbz1011907-1165785-loop.img 100M
 qemu-img create rhbz1011907-1165785.img 300M
 
-guestfish -a rhbz1011907-1165785-loop.img <<EOF
+guestfish --format=raw -a rhbz1011907-1165785-loop.img <<EOF
 run
 part-disk /dev/sda mbr
 mkfs ext3 /dev/sda
@@ -44,7 +44,7 @@ touch /in-loop
 EOF
 
 output=$(
-guestfish -a rhbz1011907-1165785.img <<EOF
+guestfish --format=raw -a rhbz1011907-1165785.img <<EOF
 run
 part-disk /dev/sda mbr
 mkfs ext3 /dev/sda1
diff --git a/tests/regressions/rhbz1054761.sh b/tests/regressions/rhbz1054761.sh
index 344479d6d..1b414f246 100755
--- a/tests/regressions/rhbz1054761.sh
+++ b/tests/regressions/rhbz1054761.sh
@@ -37,7 +37,7 @@ vgcreate VG "/dev/sda /dev/sdb"
 EOF
 
 output="$(
-    guestfish -a rhbz1054761-a.img run : pvs |
+    guestfish --format=raw -a rhbz1054761-a.img run : pvs |
         sed -r 's,^/dev/[abce-ln-z]+d,/dev/sd,'
 )"
 if [ "$output" != "/dev/sda" ]; then
diff --git a/tests/regressions/rhbz1174551.sh b/tests/regressions/rhbz1174551.sh
index a0bbb5ec1..459465760 100755
--- a/tests/regressions/rhbz1174551.sh
+++ b/tests/regressions/rhbz1174551.sh
@@ -36,7 +36,7 @@ fi
 
 rm -f test.error
 
-$VG guestfish --ro -a ../../test-data/phony-guests/fedora.img -i <<EOF 2>test.error
+$VG guestfish --ro --format=raw -a ../../test-data/phony-guests/fedora.img -i <<EOF 2>test.error
 # valid invocations
 lstatlist /etc "fedora-release sysconfig"
 lstatnslist /etc "fedora-release sysconfig"
diff --git a/tests/regressions/rhbz1285847.sh b/tests/regressions/rhbz1285847.sh
index f34fe54f0..0aa0611ae 100755
--- a/tests/regressions/rhbz1285847.sh
+++ b/tests/regressions/rhbz1285847.sh
@@ -59,7 +59,7 @@ truncate -s 10G rhbz1285847-2.img
 virt-resize rhbz1285847.img rhbz1285847-2.img --expand /dev/sda2
 
 # Check that the filesystems made it across.
-guestfish -a rhbz1285847-2.img run : list-filesystems > rhbz1285847.out
+guestfish --format=raw -a rhbz1285847-2.img run : list-filesystems > rhbz1285847.out
 
 if [ "$(cat rhbz1285847.out)" != "/dev/sda1: ext4
 /dev/sda2: unknown
diff --git a/tests/regressions/rhbz563450.sh b/tests/regressions/rhbz563450.sh
index 521567660..3c53da6c7 100755
--- a/tests/regressions/rhbz563450.sh
+++ b/tests/regressions/rhbz563450.sh
@@ -30,9 +30,9 @@ fi
 rm -f rhbz563450.out
 
 guestfish --ro > rhbz563450.out <<EOF
-add-drive-ro ../../test-data/phony-guests/fedora.img
+add ../../test-data/phony-guests/fedora.img readonly:true format:raw
 add-cdrom ../../test-data/test.iso
-add-drive-ro ../../test-data/phony-guests/debian.img
+add ../../test-data/phony-guests/debian.img readonly:true format:raw
 
 run
 
diff --git a/tests/regressions/rhbz580246.sh b/tests/regressions/rhbz580246.sh
index 218dd961a..8b842e557 100755
--- a/tests/regressions/rhbz580246.sh
+++ b/tests/regressions/rhbz580246.sh
@@ -30,7 +30,7 @@ tar cf rhbz580246.tar rhbz580246.img
 
 output=$(
 guestfish 2>&1 <<'EOF'
-add rhbz580246.img
+add rhbz580246.img format:raw
 run
 mkfs ext2 /dev/sda
 mount /dev/sda /
diff --git a/tests/regressions/rhbz690819.sh b/tests/regressions/rhbz690819.sh
index 0af0b646a..9c8d39edc 100755
--- a/tests/regressions/rhbz690819.sh
+++ b/tests/regressions/rhbz690819.sh
@@ -54,7 +54,7 @@ rm -f rhbz690819.img
 guestfish sparse rhbz690819.img 100M
 
 guestfish <<EOF
-add-drive-with-if rhbz690819.img ide
+add rhbz690819.img iface:ide format:raw
 run
 mkfs ext3 /dev/sda
 mount /dev/sda /
diff --git a/tests/regressions/rhbz789960.sh b/tests/regressions/rhbz789960.sh
index 57c04c31b..0f9e4eb05 100755
--- a/tests/regressions/rhbz789960.sh
+++ b/tests/regressions/rhbz789960.sh
@@ -24,7 +24,7 @@ export LANG=C
 
 rm -f rhbz789960.out
 
-guestfish -a ../../test-data/phony-guests/fedora.img --ro > rhbz789960.out <<EOF
+guestfish --format=raw -a ../../test-data/phony-guests/fedora.img --ro > rhbz789960.out <<EOF
 run
 
 # Not a device at all, should fail.
diff --git a/tests/regressions/rhbz811649.sh b/tests/regressions/rhbz811649.sh
index d48d2bf5b..53064c0f4 100755
--- a/tests/regressions/rhbz811649.sh
+++ b/tests/regressions/rhbz811649.sh
@@ -41,7 +41,7 @@ guestfish sparse rhbz811649.img 10M
 for f in "${filenames[@]}"; do
     ln -- rhbz811649.img "$f"
     guestfish <<EOF
-add "$f"
+add "$f" format:raw
 run
 EOF
 done
diff --git a/tests/regressions/rhbz975797.sh b/tests/regressions/rhbz975797.sh
index 3c536a983..c067a124a 100755
--- a/tests/regressions/rhbz975797.sh
+++ b/tests/regressions/rhbz975797.sh
@@ -60,9 +60,9 @@ guestfish sparse rhbz975797-2.img 1G
 guestfish sparse rhbz975797-3.img 1G
 
 $timeout guestfish <<EOF
-add-drive rhbz975797-1.img iface:virtio
-add-drive rhbz975797-2.img iface:ide
-add-drive rhbz975797-3.img
+add-drive rhbz975797-1.img iface:virtio format:raw
+add-drive rhbz975797-2.img iface:ide format:raw
+add-drive rhbz975797-3.img format:raw
 run
 EOF
 
diff --git a/tests/tsk/test-download-inode.sh b/tests/tsk/test-download-inode.sh
index 9c65aa915..f57e4244b 100755
--- a/tests/tsk/test-download-inode.sh
+++ b/tests/tsk/test-download-inode.sh
@@ -39,7 +39,7 @@ if [ ! -s ../../test-data/phony-guests/windows.img ]; then
 fi
 
 # download Master File Table ($MFT).
-guestfish --ro -a ../../test-data/phony-guests/windows.img <<EOF
+guestfish --ro --format=raw -a ../../test-data/phony-guests/windows.img <<EOF
 run
 download-inode /dev/sda2 0 test-mft.bin
 EOF
diff --git a/tools/test-virt-list-filesystems.sh b/tools/test-virt-list-filesystems.sh
index 9ed5dd264..80085b344 100755
--- a/tools/test-virt-list-filesystems.sh
+++ b/tools/test-virt-list-filesystems.sh
@@ -21,7 +21,7 @@ set -e
 
 # Run virt-list-filesystems.
 # Only columns 1 & 2 are guaranteed, we may add more in future.
-if [ "$($srcdir/virt-list-filesystems -l ../test-data/phony-guests/fedora.img |
+if [ "$($srcdir/virt-list-filesystems --format=raw -l ../test-data/phony-guests/fedora.img |
         sort | awk '{print $1 $2}')" \
     != \
 "/dev/VG/LV1ext2