diff --git a/90zfsbootmenu/zfs-chroot.sh b/90zfsbootmenu/zfs-chroot.sh
index 6dedb4a7..f29cf348 100755
--- a/90zfsbootmenu/zfs-chroot.sh
+++ b/90zfsbootmenu/zfs-chroot.sh
@@ -36,7 +36,6 @@ if mountpoint="$( allow_rw=yes mount_zfs "${selected}" )"; then
     _SHELL="/bin/sh"
   else
     zerror "unable to test execute a shell in ${selected}"
-    color=red timed_prompt "Unable to find a working shell in ${selected}"
   fi
 
   if [ -n "${_SHELL}" ]; then
@@ -45,7 +44,6 @@ if mountpoint="$( allow_rw=yes mount_zfs "${selected}" )"; then
     # regardless of shell, set PS1
     if ! env "PS1=$( colorize orange "${selected}") > " chroot "${mountpoint}" "${_SHELL}" ; then
       zerror "unable to execute ${selected}:${_SHELL}"
-      color=red timed_prompt "Unable to chroot in to ${selected}"
     fi
   fi
 
diff --git a/90zfsbootmenu/zfsbootmenu-countdown.sh b/90zfsbootmenu/zfsbootmenu-countdown.sh
index 2ef50bd5..08f1b2dd 100755
--- a/90zfsbootmenu/zfsbootmenu-countdown.sh
+++ b/90zfsbootmenu/zfsbootmenu-countdown.sh
@@ -60,6 +60,7 @@ fi
 unsupported=0
 while IFS=$'\t' read -r _pool _property; do
   if [[ "${_property}" =~ "unsupported@" ]]; then
+    zerror "unsupported property: ${_property}"
     if ! grep -q "${_pool}" "${BASE}/degraded" >/dev/null 2>&1 ; then
       echo "${_pool}" >> "${BASE}/degraded"
     fi
@@ -68,6 +69,7 @@ while IFS=$'\t' read -r _pool _property; do
 done <<<"$( zpool get all -H -o name,property )"
 
 if [ "${unsupported}" -ne 0 ]; then
+  zerror "Unsupported features detected, Upgrade ZFS modules in ZFSBootMenu with generate-zbm"
   color=red timed_prompt "Unsupported features detected" "Upgrade ZFS modules in ZFSBootMenu with generate-zbm"
 fi
 
diff --git a/90zfsbootmenu/zfsbootmenu-exec.sh b/90zfsbootmenu/zfsbootmenu-exec.sh
index c76525a9..641d985c 100755
--- a/90zfsbootmenu/zfsbootmenu-exec.sh
+++ b/90zfsbootmenu/zfsbootmenu-exec.sh
@@ -8,12 +8,7 @@ export loglevel
 export root
 export zbm_sort
 
-# store current kernel log level
-read -r PRINTK < /proc/sys/kernel/printk
-PRINTK=${PRINTK:0:1}
-export PRINTK
-
-# Set it to 0
+# Disable all kernel messages to the console
 echo 0 > /proc/sys/kernel/printk
 
 # set the console size, if indicated
@@ -31,6 +26,7 @@ fi
 echo "Loading ZFSBootMenu ..."
 
 export BASE="/zfsbootmenu"
+mkdir -p "${BASE}"
 
 modprobe zfs 2>/dev/null
 udevadm settle
@@ -44,7 +40,7 @@ udevadm settle
 #shellcheck disable=SC2154
 if [ -n "${zbm_tmux}" ] && [ -x /bin/tmux ]; then
   tmux new-session -n ZFSBootMenu -d /libexec/zfsbootmenu-countdown
-  tmux new-window -n logs /bin/zlogtail
+  tmux new-window -n logs /bin/zlogtail -f -n
   tmux new-window -n shell /bin/bash
   exec tmux attach-session \; select-window -t ZFSBootMenu
 else
diff --git a/90zfsbootmenu/zfsbootmenu-lib.sh b/90zfsbootmenu/zfsbootmenu-lib.sh
index c4fef3fa..fa9235e9 100755
--- a/90zfsbootmenu/zfsbootmenu-lib.sh
+++ b/90zfsbootmenu/zfsbootmenu-lib.sh
@@ -21,7 +21,8 @@ zlog() {
   _script="$( basename $0 )"
   _func="${FUNCNAME[2]}"
 
-  echo -e "<${1}>ZBM:\033[0;33m${_script}[$$]\033[0;31m:${_func}()\033[0m: ${2}" > /dev/kmsg
+  WIDTH="$( tput cols )"
+  echo -e "<${1}>ZBM:\033[0;33m${_script}[$$]\033[0;31m:${_func}()\033[0m: ${2}" | fold -s -w "${WIDTH}" > /dev/kmsg
 }
 
 # arg1: log line
@@ -41,6 +42,7 @@ zwarn() {
 }
 
 zerror() {
+  : > "${BASE}/have_errors"
   zlog 3 "$@"
 }
 
@@ -107,6 +109,12 @@ mount_zfs() {
   local fs rwo mnt ret pool is_snapshot
 
   fs="${1}"
+
+  if [ -z "${fs}" ]; then
+    zerror "fs is undefined"
+    return 1
+  fi
+
   if be_is_locked "${fs}" >/dev/null; then
     zdebug "${fs} is locked, returning"
     return 1
@@ -250,12 +258,19 @@ draw_be() {
   local env selected header expects
 
   env="${1}"
+  if [ -z "${env}" ]; then
+    zerror "environment file is undefined"
+    return 130
+  fi
 
-  zdebug "using environment file: ${env}"
+  if [ ! -r "${env}" ] ; then
+    zerror "environment file ${env} is missing"
+    return 130
+  fi
 
-  [ -r "${env}" ] || return 130
+  zdebug "using environment file: ${env}"
 
-  header="$( header_wrap "[ENTER] boot" "[ESC] refresh view" "[CTRL+H] help" "" \
+  header="$( header_wrap "[ENTER] boot" "[ESC] refresh view" "[CTRL+H] help" "[CTRL+L] error log" "" \
     "[CTRL+E] edit kcl" "[CTRL+K] kernels" "[CTRL+D] set bootfs" "[CTRL+S] snapshots" "" \
     "[CTRL+I] interactive chroot" "[CTRL+R] recovery shell" "[CTRL+P] pool status" )"
 
@@ -284,14 +299,21 @@ draw_kernel() {
   local benv selected header expects _kernels
 
   benv="${1}"
+  if [ -z "${benv}" ]; then
+    zerror "benv is undefined"
+    return 130
+  fi
+
   _kernels="${BASE}/${benv}/kernels"
+  if [ ! -r "${_kernels}" ] ; then
+    zerror "kernel file ${_kernels} missing"
+    return 130
+  fi
 
   zdebug "using kernels file: ${_kernels}"
 
-  [ -r "${_kernels}" ] || return 130
-
   header="$( header_wrap \
-    "[ENTER] boot" "[ESC] back" "" "[CTRL+D] set default" "[CTRL+H] help" )"
+    "[ENTER] boot" "[ESC] back" "" "[CTRL+D] set default" "[CTRL+H] help" "[CTRL+L] error log" )"
 
   expects="--expect=alt-d"
 
@@ -319,13 +341,16 @@ draw_snapshots() {
   local benv selected header expects sort_key
 
   benv="${1}"
-
+  if [ -z "${benv}" ]; then
+    zerror "benv is undefined"
+    return 130
+  fi
   zdebug "using boot environment: ${benv}"
 
   sort_key="$( get_sort_key )"
 
   header="$( header_wrap \
-    "[ENTER] duplicate" "[ESC] back" "[CTRL+H] help" "" \
+    "[ENTER] duplicate" "[ESC] back" "[CTRL+H] help" "[CTRL+L] error log" "" \
     "[CTRL+X] clone and promote" "[CTRL+C] clone only" "" \
     "[CTRL+I] interactive chroot" "[CTRL+D] show diff" )"
 
@@ -357,9 +382,13 @@ draw_diff() {
   local snapshot pool diff_target mnt
 
   snapshot="${1}"
-  pool="${snapshot%%/*}"
-
+  if [ -z "${snapshot}" ]; then
+    zerror "snapshot is undefined"
+    return 130
+  fi
   zdebug "snapshot: ${snapshot}"
+
+  pool="${snapshot%%/*}"
   zdebug "pool: ${pool}"
 
   if ! set_rw_pool "${pool}"; then
@@ -378,14 +407,14 @@ draw_diff() {
   fi
 
   # shellcheck disable=SC2016
-  ( zfs diff -F -H "${snapshot}" "${diff_target}" & echo $! >&3 ) 3>/tmp/diff.pid | \
+  ( zfs diff -F -H "${snapshot}" "${diff_target}" & echo $! >&3 ) 3>"${BASE}/diff.pid" | \
     sed "s,${mnt},," | \
     HELP_SECTION=DIFF ${FUZZYSEL} --prompt "${snapshot} > " \
       --preview="/libexec/zfsbootmenu-preview ${diff_target} ${BOOTFS}" \
       --preview-window="up:${PREVIEW_HEIGHT}" \
-      --bind 'esc:execute-silent( kill $( cat /tmp/diff.pid ) )+abort'
+      --bind 'esc:execute-silent[ kill $( cat ${BASE}/diff.pid ) ]+abort'
 
-  rm -f /tmp/diff.pid
+  rm -f "${BASE}/diff.pid"
   umount "${mnt}"
 
   return
@@ -401,7 +430,7 @@ draw_pool_status() {
   # Wrap to half width to avoid the preview window
   hdr_width="$(( ( $( tput cols ) / 2 ) - 4 ))"
   header="$( wrap_width="$hdr_width" header_wrap \
-    "[ESC] back" "" "[CTRL+R] rewind checkpoint" "" "[CTRL+H] help" )"
+    "[ESC] back" "" "[CTRL+R] rewind checkpoint" "" "[CTRL+H] help" "[CTRL+L] error log" )"
 
   if ! selected="$( zpool list -H -o name |
       HELP_SECTION=POOL ${FUZZYSEL} \
@@ -426,6 +455,10 @@ kexec_kernel() {
   local selected fs kernel initramfs tdhook output
 
   selected="${1}"
+  if [ -z "${selected}" ]; then
+    zerror "fs, kernel, initramfs undefined"
+    return 130
+  fi
 
   # zfs filesystem
   # kernel
@@ -447,13 +480,6 @@ kexec_kernel() {
   cli_args="$( load_be_cmdline "${fs}" )"
   root_prefix="$( find_root_prefix "${fs}" "${mnt}" )"
 
-  # restore kernel log level just before we kexec
-  # shellcheck disable=SC2154
-  if [ -n "${PRINTK}" ] ; then
-    echo "${PRINTK}" > /proc/sys/kernel/printk
-    zdebug "restored kernel log level to ${PRINTK}"
-  fi
-
   if ! output="$( kexec -l "${mnt}${kernel}" \
     --initrd="${mnt}${initramfs}" \
     --command-line="${root_prefix}${fs} ${cli_args}" 2>&1 )"
@@ -461,6 +487,10 @@ kexec_kernel() {
     zerror "unable to load ${mnt}${kernel} and ${mnt}${initramfs} into memory"
     zerror "${output}"
     umount "${mnt}"
+    color=red delay=10 timed_prompt "Unable to load kernel or initramfs into memory" \
+      "${mnt}${kernel}" \
+      "${mnt}${initramfs}"
+
     return 1
   else
     zdebug "loaded ${mnt}${kernel} and ${mnt}${initramfs} into memory"
@@ -487,7 +517,9 @@ kexec_kernel() {
   fi
 
   if ! output="$( kexec -e -i 2>&1 )"; then
-    zdebug "${output}"
+    zerror "kexec -e -i failed!"
+    zerror "${output}"
+    color=red delay=10 timed_prompt "kexec run of ${kernel} failed!"
     return 1
   fi
 }
@@ -501,16 +533,24 @@ duplicate_snapshot() {
   local selected target target_parent pool recv_args
 
   selected="${1}"
-  target="${2}"
-
-  [ -n "$selected" ] || return 1
-  [ -n "$target" ] || return 1
-
+  if [ -z "$selected" ]; then
+    zerror "selected is undefined"
+    return 1
+  fi
   zdebug "selected: ${selected}"
+
+  target="${2}"
+  if [ -z "$target" ]; then
+    zerror "target is undefined"
+    return 1
+  fi
   zdebug "target: ${target}"
 
   pool="${selected%%/*}"
-  set_rw_pool "${pool}" || return 1
+  if ! set_rw_pool "${pool}" ; then
+    zerror "unable to set pool ${pool} read/write"
+    return 1
+  fi
 
   # Make sure both the source and the parent of the target are unlocked
   # NOTE: load_key should work as expected without stripping snapshot from name
@@ -545,21 +585,32 @@ duplicate_snapshot() {
 clone_snapshot() {
   local selected target pool opts parent
 
-  selected="${1}"
-  target="${2}"
   promote="${3}"
 
-  [ -n "$selected" ] || return 1
-  [ -n "$target" ] || return 1
-
+  selected="${1}"
+  if [ -z "$selected" ]; then
+    zerror "selected is undefined"
+    return 1
+  fi
   zdebug "selected: ${selected}"
+
+  target="${2}"
+  if [ -z "$target" ]; then
+    zerror "target is undefined"
+    return 1
+  fi
   zdebug "target: ${target}"
+
+  promote="${3}"
   zdebug "promote: ${promote}"
 
   pool="${selected%%/*}"
-  parent="${selected%%@*}"
+  if ! set_rw_pool "${pool}" ; then
+    zerror "unable to set pool ${pool} read/write"
+    return 1
+  fi
 
-  set_rw_pool "${pool}" || return 1
+  parent="${selected%%@*}"
   load_key "${parent}"
 
   while read -r PROPERTY VALUE
@@ -605,11 +656,17 @@ set_default_kernel() {
   local fs kernel
 
   fs="$1"
-  [ -n "${fs}" ] || return 1
+  if [ -z "${fs}" ]; then
+    zerror "fs is undefined"
+    return 1
+  fi
   zdebug "fs set to ${fs}"
 
   pool="${fs%%/*}"
-  [ -n "${pool}" ] || return 1
+  if [ -z "${pool}" ]; then
+    zerror "pool is undefined"
+    return 1
+  fi
   zdebug "pool set to ${pool}"
 
   # Strip /boot/ to list only the file
@@ -638,18 +695,27 @@ set_default_env() {
   local environment pool
 
   environment="${1}"
-  [ -n "${environment}" ] || return 1
+  if [ -z "${environment}" ] ; then
+    zerror "environment is undefined"
+    return 1
+  fi
   zdebug "environment set to: ${environment}"
 
   pool="${environment%%/*}"
   zdebug "pool set to: ${pool}"
+  if ! set_rw_pool "${pool}" ; then
+    zerror "unable to set pool ${pool} read/write"
+    return 1
+  fi
 
-  set_rw_pool "${pool}" || return 1
   CLEAR_SCREEN=1 load_key "${pool}"
 
   if zpool set bootfs="${environment}" "${pool}" >/dev/null 2>&1 ; then
     BOOTFS="${environment}"
     zdebug "BOOTFS set to ${BOOTFS}"
+  else
+    zerror "unable to set bootfs=${environment} on ${pool}"
+    return 1
   fi
 }
 
@@ -659,12 +725,16 @@ set_default_env() {
 
 find_be_kernels() {
   local fs mnt
-  fs="${1}"
-
-
   local kernel kernel_base labels version kernel_records
   local defaults def_kernel def_kernel_file
 
+  fs="${1}"
+  if [ -z "${fs}" ]; then
+    zerror "fs is undefined"
+    return 1
+  fi
+  zdebug "fs set to ${fs}"
+
   # Try to mount, just skip the list otherwise
   if ! mnt="$( mount_zfs "${fs}" )"; then
     zerror "unable to mount ${fs}"
@@ -750,10 +820,14 @@ find_be_kernels() {
 # returns: nothing
 
 select_kernel() {
-  local zfsbe
-  zfsbe="${1}"
+  local zfsbe specific_kernel kexec_args spec_kexec_args
 
-  local specific_kernel kexec_args spec_kexec_args
+  zfsbe="${1}"
+  if [ -z "${zfsbe}" ]; then
+    zerror "zfsbe is undefined"
+    return 1
+  fi
+  zdebug "zfsbe set to ${zfsbe}"
 
   # By default, select the last kernel entry
   kexec_args="$( tail -1 "${BASE}/${zfsbe}/kernels" )"
@@ -773,6 +847,7 @@ select_kernel() {
     done <<<"$( tac "${BASE}/${zfsbe}/kernels" )"
   fi
 
+  zdebug "using kexec args: ${kexec_args}"
   echo "${kexec_args}"
 }
 
@@ -782,8 +857,20 @@ select_kernel() {
 
 find_root_prefix() {
   local zfsbe_mnt zfsbe_fs prefix
+
   zfsbe_fs="${1}"
+  if [ -z "${zfsbe_fs}" ]; then
+    zerror "zfsbe_fs is undefined"
+    return 1
+  fi
+  zdebug "zfsbe_fs set to ${zfsbe_fs}"
+
   zfsbe_mnt="${2}"
+  if [ -z "${zfsbe_mnt}" ]; then
+    zerror "zfsbe_mnt is undefined"
+    return 1
+  fi
+  zdebug "zfsbe_mnt set to ${zfsbe_mnt}"
 
   # Grab the root prefix from a property if possible
   if prefix="$( zfs get -H -o value org.zfsbootmenu:rootprefix "${zfsbe_fs}" )"; then
@@ -845,8 +932,20 @@ find_root_prefix() {
 
 preload_be_cmdline() {
   local zfsbe_mnt zfsbe_fs zfsbe_args args_file
+
   zfsbe_fs="${1}"
+  if [ -z "${zfsbe_fs}" ]; then
+    zerror "zfsbe_fs is undefined"
+    return 1
+  fi
+  zdebug "zfsbe_fs set to ${zfsbe_fs}"
+
   zfsbe_mnt="${2}"
+  if [ -z "${zfsbe_mnt}" ]; then
+    zerror "zfsbe_mnt is undefined"
+    return 1
+  fi
+  zdebug "zfsbe_mnt set to ${zfsbe_mnt}"
 
   args_file="${BASE}/${zfsbe_fs}/cmdline"
 
@@ -882,7 +981,13 @@ preload_be_cmdline() {
 
 load_be_cmdline() {
   local zfsbe_fs zfsbe_args
+
   zfsbe_fs="${1}"
+  if [ -z "${zfsbe_fs}" ]; then
+    zerror "zfsbe_fs is undefined"
+    return 1
+  fi
+  zdebug "zfsbe_fs set to ${zfsbe_fs}"
 
   # If a user-entered cmdline is found, it is not modified
   if [ -r "${BASE}/cmdline" ]; then
@@ -954,6 +1059,9 @@ import_pool() {
   local pool import_args
 
   pool="${1}"
+  if [ -n "${pool}" ]; then
+    zdebug "pool set to ${pool}"
+  fi
 
   # Import /never/ mounts filesystems
   import_args=( "-N" )
@@ -1001,9 +1109,13 @@ import_pool() {
 
 export_pool() {
   local pool
-  pool="${1}"
 
-  zdebug "pool: ${pool}"
+  pool="${1}"
+  if [ -z "${pool}" ]; then
+    zerror "pool is undefined"
+    return 1
+  fi
+  zdebug "pool set to ${pool}"
 
   # shellcheck disable=SC2034
   status="$( zpool export "${pool}" )"
@@ -1021,6 +1133,11 @@ export_pool() {
 rewind_checkpoint() {
   local pool checkpoint
   pool="${1}"
+  if [ -z "${pool}" ]; then
+    zerror "pool is undefined"
+    return 1
+  fi
+  zdebug "pool set to ${pool}"
 
   while read -r line; do
     case "$line" in
@@ -1128,7 +1245,11 @@ resume_prompt() {
   local pool decision
 
   pool="${1}"
-  [ -n "${pool}" ] || return 1
+  if [ -z "${pool}" ]; then
+    zerror "pool is undefined"
+    return 1
+  fi
+  zdebug "pool set to ${pool}"
 
   # Try to avoid importing writable when a resume device is found
   if has_resume_device; then
@@ -1190,7 +1311,11 @@ is_writable() {
   local pool roflag
 
   pool="${1}"
-  [ -n "${pool}" ] || return 1
+  if [ -z "${pool}" ]; then
+    zerror "pool is undefined"
+    return 1
+  fi
+  zdebug "pool set to ${pool}"
 
   # Pool is not writable if the property can't be read
   roflag="$( zpool get -H -o value readonly "${pool}" 2>/dev/null )" || return 1
@@ -1212,10 +1337,11 @@ set_rw_pool() {
   local pool ret
 
   pool="${1}"
-
-  zdebug "pool: ${pool}"
-
-  [ -n "${pool}" ] || return 1
+  if [ -z "${pool}" ]; then
+    zerror "pool is undefined"
+    return 1
+  fi
+  zdebug "pool set to ${pool}"
 
   # If force_export is set, skip evaluating if the pool is already read-write
   # shellcheck disable=SC2154
@@ -1249,7 +1375,14 @@ set_rw_pool() {
 
 be_has_encroot() {
   local fs pool encroot
+
   fs="${1}"
+  if [ -z "${fs}" ]; then
+    zerror "fs is undefined"
+    return 1
+  fi
+  zdebug "fs set to ${fs}"
+
   pool="${fs%%/*}"
 
   if [ "$( zpool list -H -o feature@encryption "${pool}" )" != "active" ]; then
@@ -1276,7 +1409,13 @@ be_has_encroot() {
 
 be_is_locked() {
   local fs keystatus encroot
+
   fs="${1}"
+  if [ -z "${fs}" ]; then
+    zerror "fs is undefined"
+    return 1
+  fi
+  zdebug "fs set to ${fs}"
 
   if encroot="$( be_has_encroot "${fs}" )"; then
     zdebug "${encroot} discovered as encryption root for ${fs}"
@@ -1302,7 +1441,13 @@ be_is_locked() {
 
 be_keysource() {
   local fs keysrc
+
   fs="${1}"
+  if [ -z "${fs}" ]; then
+    zerror "fs is undefined"
+    return 1
+  fi
+  zdebug "fs set to ${fs}"
 
   if ! keysrc="$( zfs get -H -o value org.zfsbootmenu:keysource "${fs}" )"; then
     zwarn "failed to read org.zfsbootmenu:keysource on ${fs}"
@@ -1332,8 +1477,20 @@ be_keysource() {
 
 cache_key() {
   local fs keylocation keyfile keydir keysrc keycache mutex mnt ret
+
   fs="${1}"
+  if [ -z "${fs}" ]; then
+    zerror "fs is undefined"
+    return 1
+  fi
+  zdebug "fs set to ${fs}"
+
   keylocation="${2}"
+  if [ -z "${keylocation}" ]; then
+    zerror "keylocation is undefined"
+    return 1
+  fi
+  zdebug "keylocation set to ${keylocation}"
 
   # Strip scheme if it exists
   keyfile="${keylocation#file://}"
@@ -1418,7 +1575,13 @@ cache_key() {
 
 load_key() {
   local fs encroot key keypath keyformat keylocation keysource
+
   fs="${1}"
+  if [ -z "${fs}" ]; then
+    zerror "fs is undefined"
+    return 1
+  fi
+  zdebug "fs set to ${fs}"
 
   # Nothing to do if filesystem is not locked
   if ! encroot="$( be_is_locked "${fs}" )" || [ -z "$encroot" ]; then
@@ -1503,7 +1666,11 @@ populate_be_list() {
   local be_list fs mnt active candidates ret sort_key
 
   be_list="${1}"
-  [ -n "${be_list}" ] || return 1
+  if [ -z "${be_list}" ]; then
+    zerror "be_list is undefined"
+    return 1
+  fi
+  zdebug "be_list set to ${be_list}"
 
   sort_key="$( get_sort_key )"
 
@@ -1553,8 +1720,13 @@ populate_be_list() {
 
 zfs_chroot() {
   local fs
+
   fs="${1}"
-  [ -n "${fs}" ] || return
+  if [ -z "${fs}" ]; then
+    zerror "fs is undefined"
+    return 1
+  fi
+  zdebug "fs set to ${fs}"
 
   tput clear
   tput cnorm
diff --git a/90zfsbootmenu/zfsbootmenu-parse-commandline.sh b/90zfsbootmenu/zfsbootmenu-parse-commandline.sh
index 3ddfbb76..833b6f80 100755
--- a/90zfsbootmenu/zfsbootmenu-parse-commandline.sh
+++ b/90zfsbootmenu/zfsbootmenu-parse-commandline.sh
@@ -29,6 +29,8 @@ fi
 # Use loglevel to determine logging to /dev/kmsg
 loglevel=$( getarg loglevel=)
 if [ -n "${loglevel}" ]; then
+  # minimum log level of 3, so we never lose error messages
+  [ "${loglevel}" -ge 3 ] || loglevel=3
   info "ZFSBootMenu: setting log level from command line: ${loglevel}"
 else
   loglevel=3
diff --git a/90zfsbootmenu/zfsbootmenu-preview.sh b/90zfsbootmenu/zfsbootmenu-preview.sh
index a3591f10..7d781ce5 100755
--- a/90zfsbootmenu/zfsbootmenu-preview.sh
+++ b/90zfsbootmenu/zfsbootmenu-preview.sh
@@ -26,11 +26,16 @@ else
   _DEFAULT=""
 fi
 
-selected_env_str="$( center_string "${ENV} (${_DEFAULT}${_readonly}) - ${selected_kernel}" )"
-
 selected_arguments="$( load_be_cmdline "${ENV}" )"
 selected_arguments="$( center_string "$( load_be_cmdline "${ENV}" )" )"
 
+selected_env_str="$( center_string "${ENV} (${_DEFAULT}${_readonly}) - ${selected_kernel}" )"
+
 # colorize doesn't automatically add a newline
+if [ -f "${BASE}/have_errors" ]; then
+  selected_env_str="${selected_env_str:3}"
+  colorize "red" "[!]"
+fi
+
 colorize "${_COLOR}" "${selected_env_str}\n"
 echo "${selected_arguments}"
diff --git a/90zfsbootmenu/zfsbootmenu.sh b/90zfsbootmenu/zfsbootmenu.sh
index 9c3d6be2..d002f1d4 100755
--- a/90zfsbootmenu/zfsbootmenu.sh
+++ b/90zfsbootmenu/zfsbootmenu.sh
@@ -60,7 +60,10 @@ fuzzy_default_options=( "--ansi" "--no-clear"
   "--layout=reverse-list" "--inline-info" "--tac" "--color=16"
   "--bind" '"alt-h:execute[ /libexec/zfsbootmenu-help -L ${HELP_SECTION:-MAIN} ]"'
   "--bind" '"ctrl-h:execute[ /libexec/zfsbootmenu-help -L ${HELP_SECTION:-MAIN} ]"'
-  "--bind" '"ctrl-alt-h:execute[ /libexec/zfsbootmenu-help -L ${HELP_SECTION:-MAIN} ]"' )
+  "--bind" '"ctrl-alt-h:execute[ /libexec/zfsbootmenu-help -L ${HELP_SECTION:-MAIN} ]"'
+  "--bind" '"alt-l:execute[ /bin/zlogtail -l err -F user -c ]+refresh-preview"'
+  "--bind" '"ctrl-l:execute[ /bin/zlogtail -l err -F user -c ]+refresh-preview"'
+  "--bind" '"ctrl-alt-l:execute[ /bin/zlogtail -l err -F user -c ]+refresh-preview"' )
 if command -v fzf >/dev/null 2>&1; then
   zdebug "using fzf for pager"
   export FUZZYSEL=fzf
@@ -209,6 +212,7 @@ while true; do
           if [ "${leftover_space}" -le 0 ]; then
             avail_space="$( zfs list -H -o available "${parent_ds}" )"
             be_size="$( zfs list -H -o refer "${selected_snap}" )"
+            zerror "Insufficient space for duplication, ${parent_ds}' has ${avail_space} free but needs ${be_size}"
             color=red delay=10 timed_prompt "Insufficient space for duplication" \
               "'${parent_ds}' has ${avail_space} free but needs ${be_size}"
             continue
@@ -280,7 +284,7 @@ while true; do
       tput cnorm
 
       echo ""
-      /libexec/zfsbootmenu-preview "${BASE}" "${selected_be}" "${BOOTFS}"
+      /libexec/zfsbootmenu-preview "${selected_be}" "${BOOTFS}"
 
       BE_ARGS="$( load_be_cmdline "${selected_be}" )"
       while IFS= read -r line; do
diff --git a/90zfsbootmenu/zlogtail.sh b/90zfsbootmenu/zlogtail.sh
index c2b538b7..a4ce41e1 100755
--- a/90zfsbootmenu/zlogtail.sh
+++ b/90zfsbootmenu/zlogtail.sh
@@ -1,14 +1,61 @@
 #!/bin/bash
 
-# Ignore keys in a future release
-# --bind "ctrl-c:ignore,ctrl-g:ignore,esc:ignore,enter:ignore"
+PID_FILE="$( mktemp --tmpdir="${BASE}" )"
+export PID_FILE
+trap 'rm -f ${PID_FILE}' EXIT
+
+#shellcheck disable=SC2154
+LOG_LEVEL="0,1,2,3,4,5,6,7"
+FACILITY="kern,user"
+FOLLOW=""
+ALLOW_EXIT=1
+while getopts "cfnl:F:" opt; do
+  case "${opt}" in
+    l)
+      LOG_LEVEL="${OPTARG}"
+      ;;
+    n)
+      ALLOW_EXIT=0
+      ;;
+    f)
+      FOLLOW="-w"
+      ;;
+    c)
+      [ -f "${BASE}/have_errors" ] && rm "${BASE}/have_errors"
+      ;;
+    F)
+      FACILITY="${OPTARG}"
+      ;;
+    *)
+      ;;
+  esac
+done
+
+fuzzy_default_options+=("--no-sort")
+fuzzy_default_options+=("--ansi")
+fuzzy_default_options+=("--tac")
+
+fuzzy_default_options+=("--bind")
+fuzzy_default_options+=('"ctrl-q:ignore,ctrl-c:ignore,ctrl-g:ignore,enter:ignore"')
+
+if ((ALLOW_EXIT)) ; then
+  fuzzy_default_options+=("--bind")
+  # shellcheck disable=SC2016
+  fuzzy_default_options+=('"esc:execute-silent[ kill $( cat ${PID_FILE} ) ]+abort"')
+else
+  fuzzy_default_options+=("--bind")
+  fuzzy_default_options+=('"esc:ignore"')
+fi
 
 if command -v fzf >/dev/null 2>&1; then
   FUZZYSEL=fzf
-  export FZF_DEFAULT_OPTS='--no-mouse --no-sort --ansi --tac --no-info'
+  export FZF_DEFAULT_OPTS="--no-mouse --no-info ${fuzzy_default_options[*]}"
 elif command -v sk >/dev/null 2>&1; then
   FUZZYSEL=sk
-  export SKIM_DEFAULT_OPTIONS='--no-sort --ansi --tac'
+  export SKIM_DEFAULT_OPTIONS="${fuzzy_default_options[*]}"
 fi
 
-dmesg -T --time-format reltime --noescape -w | ${FUZZYSEL}
+ # shellcheck disable=SC2086
+( dmesg -T --time-format reltime --noescape -f ${FACILITY} -l ${LOG_LEVEL} ${FOLLOW} & echo $! >&3 ) \
+  3>"${PID_FILE}" \
+  | ${FUZZYSEL}