diff --git a/buildiso.sh b/buildiso.sh
index 556c518..86c48a7 100755
--- a/buildiso.sh
+++ b/buildiso.sh
@@ -7,6 +7,7 @@
 # using a standard Debian intaller ISO. The end system is suitable
 # for immediate bootstrapping with the PVC Ansible roles.
 
+liveisofile="$( pwd )/debian-live-buster-DI-rc1-amd64-standard.iso"
 
 fail() {
     echo $@
@@ -17,7 +18,6 @@ which debootstrap &>/dev/null || fail "This script requires debootstrap."
 which mksquashfs &>/dev/null || fail "This script requires squashfs."
 which xorriso &>/dev/null || fail "This script requires xorriso."
 
-liveisofile="$( pwd )/debian-live-buster-DI-rc1-amd64-standard.iso"
 tempdir=$( mktemp -d )
 
 prepare_iso() {
@@ -28,11 +28,11 @@ prepare_iso() {
     echo -n "Extracting Debian LiveISO files... "
     iso_tempdir=$( mktemp -d )
     sudo mount ${liveisofile} ${iso_tempdir} &>/dev/null || fail "Error mounting LiveISO file."
-	sudo rsync -au --exclude live/filesystem.squashfs ${iso_tempdir}/ ${tempdir}/installer/ || fail "Error extracting LiveISO files."
+	sudo rsync -au --exclude live/filesystem.squashfs ${iso_tempdir}/ ${tempdir}/installer/ &>/dev/null || fail "Error extracting LiveISO files."
     sudo umount ${iso_tempdir} &>/dev/null || fail "Error unmounting LiveISO file."
     rmdir ${iso_tempdir} &>/dev/null
-    sudo cp -a grub.cfg ${tempdir}/installer/boot/grub/grub.cfg &>/dev/null
-    sudo cp -a menu.cfg ${tempdir}/installer/isolinux/menu.cfg &>/dev/null
+    sudo cp -a grub.cfg ${tempdir}/installer/boot/grub/grub.cfg &>/dev/null || fail "Error copying grub.cfg file."
+    sudo cp -a menu.cfg ${tempdir}/installer/isolinux/menu.cfg &>/dev/null || fail "Error copying menu.cfg file."
     echo "done."
 }
 
@@ -44,31 +44,30 @@ prepare_rootfs() {
         --include=${SQUASHFS_PKGLIST} \
         buster \
         debootstrap/ \
-        http://localhost:3142/ftp.ca.debian.org/debian &>/dev/null
-    sudo chroot debootstrap/ apt clean
-    sudo rsync -au debootstrap/ ${tempdir}/rootfs/
+        http://localhost:3142/ftp.ca.debian.org/debian &>/dev/null || fail "Error performing debootstrap."
+    sudo chroot debootstrap/ apt clean &>/dev/null || fail "Error cleaning apt cache in debootstrap."
+    sudo rsync -au debootstrap/ ${tempdir}/rootfs/ &>/dev/null || fail "Error copying debootstrap to tempdir."
     echo "done."
    
     echo -n "Configuring Debian live installation... "
-	sudo cp install.sh ${tempdir}/rootfs/
-    sudo cp ${tempdir}/rootfs/lib/systemd/system/getty\@.service ${tempdir}/rootfs/etc/systemd/system/getty@tty1.service
+    sudo cp ${tempdir}/rootfs/lib/systemd/system/getty\@.service ${tempdir}/rootfs/etc/systemd/system/getty@tty1.service &>/dev/null || fail "Error copying getty override to tempdir."
     sudo sed -i \
         's|/sbin/agetty|/sbin/agetty --autologin root|g' \
-         ${tempdir}/rootfs/etc/systemd/system/getty@tty1.service
-    
-    sudo tee ${tempdir}/rootfs/etc/hostname <<<"pvc-node-installer" &>/dev/null
-    sudo tee -a ${tempdir}/rootfs/root/.bashrc <<<"/install.sh" &>/dev/null
-    sudo chroot ${tempdir}/rootfs/ /usr/bin/passwd -d root &>/dev/null
+         ${tempdir}/rootfs/etc/systemd/system/getty@tty1.service &>/dev/null || fail "Error setting autologin in getty override."
+    sudo tee ${tempdir}/rootfs/etc/hostname <<<"pvc-node-installer" &>/dev/null || fail "Error setting hostname."
+    sudo tee -a ${tempdir}/rootfs/root/.bashrc <<<"/install.sh" &>/dev/null || fail "Error setting bashrc."
+    sudo chroot ${tempdir}/rootfs/ /usr/bin/passwd -d root &>/dev/null || fail "Error disabling root password."
+	sudo cp install.sh ${tempdir}/rootfs/ &>/dev/null || fail "Error copying install.sh to tempdir."
     echo "done."
     
     echo -n "Generating squashfs image of live installation... "
-    sudo nice mksquashfs ${tempdir}/rootfs/ ${tempdir}/installer/live/install.squashfs -e boot &>/dev/null
+    sudo nice mksquashfs ${tempdir}/rootfs/ ${tempdir}/installer/live/install.squashfs -e boot &>/dev/null || fail "Error generating squashfs."
     echo "done."
 }
 
 build_iso() {
-    pushd ${tempdir}/installer &>/dev/null
     echo -n "Creating LiveCD ISO... "
+    pushd ${tempdir}/installer &>/dev/null
     xorriso -as mkisofs \
        -isohybrid-mbr /usr/lib/ISOLINUX/isohdpfx.bin \
        -c isolinux/boot.cat \
@@ -81,17 +80,19 @@ build_iso() {
        -no-emul-boot \
        -isohybrid-gpt-basdat \
        -o ../pvc-installer.iso \
-       . &>/dev/null
+       . &>/dev/null || fail "Error creating ISO file."
     popd &>/dev/null
     echo "done."
+
     echo -n "Moving generated ISO to '$(pwd)/pvc-installer.iso'... "
-    mv ${tempdir}/pvc-installer.iso . &>/dev/null
+    mv ${tempdir}/pvc-installer.iso . &>/dev/null || fail "Error moving ISO file."
     echo "done."
 }
 
 prepare_iso
 prepare_rootfs
 build_iso
+
 echo -n "Cleaning up... "
 sudo rm -rf ${tempdir} &>/dev/null
 echo "done."