diff --git a/OSX/zfs-test-encryption-speeds--osx--copy-iso.sh b/OSX/zfs-test-encryption-speeds--osx--copy-iso.sh
index fd97276..71088b9 100644
--- a/OSX/zfs-test-encryption-speeds--osx--copy-iso.sh
+++ b/OSX/zfs-test-encryption-speeds--osx--copy-iso.sh
@@ -1,7 +1,7 @@
-#!/bin/bash5
+#!/bin/bash
 
 # osx
-# basic copy test after running zfs-test-encryption-speeds--osx
+# basic copy ISO to test each ZFS cipher's encryption speed after running zfs-test-encryption-speeds--osx (which creates the datasets)
 
 stime=$(date)
 
@@ -11,11 +11,16 @@ zp=zint500 # This is where the Test-aes* datasets live
 tmpfile=$HOME/zfstestencrspeeds.txt
 outfile=$HOME/zfs-test-encryption-speeds-results.log
 
-source ~/bin/failexit.mrg
+#source ~/bin/failexit.mrg
+# failexit.mrg
+function failexit () {
+  echo '! Something failed! Code: '"$1 $2" # code # (and optional description)
+  exit $1
+}
 
 useramdisk=1
 [ $useramdisk -eq 0 ] && isopath=/Volumes/zsgtera4/shrcompr-zsgt2B/ISO # use if < 6GB RAM installed
-# TODO EDITME ^^
+# xxx TODO EDITME ^^
 [ "$isopath" = "" ] && isopath=/Volumes/ramdisk
 
 [ -e "$isopath" ] || failexit 101 "! Ramdisk or ISO source not detected - run zfs-test-encryption-speeds--osx to create it"
@@ -23,12 +28,13 @@ useramdisk=1
 cd "$isopath" && pwd
 
 function ttime () {
-  result=$(date -j -f "%a %b %d %T %Z %Y" "`date`" "+%s") 
+  result=$(date -j -f "%a %b %d %T %Z %Y" "$(date)" "+%s") 
   # see ' man date ' -- seconds
 }
 
+# blankit
 > $tmpfile
-echo "Copying ISO file to each encrypted dataset"
+echo "$(date) - Copying ISO file to each encrypted dataset"
 for d in /Volumes/$zp/Test-aes*; do
   date; ttime; tstart=$result
   time cp -vf *.iso $d
@@ -37,8 +43,8 @@ for d in /Volumes/$zp/Test-aes*; do
   
   let csecs=$tend-$tstart
   echo "$csecs Seconds to Copy ISO to $d" |tee -a $tmpfile
-  countdown 10 # sleep 10
-  purge
+  sleep 10
+  purge # OSX doesnt really have a sync, this is close
 done
 
 echo "o Start time: $stime -- End time: $ntime"