diff --git a/zfs-inplace-rebalancing.sh b/zfs-inplace-rebalancing.sh
index 42c0aca..cbcc168 100755
--- a/zfs-inplace-rebalancing.sh
+++ b/zfs-inplace-rebalancing.sh
@@ -18,10 +18,7 @@ Black='\033[0;30m'        # Black
 Red='\033[0;31m'          # Red
 Green='\033[0;32m'        # Green
 Yellow='\033[0;33m'       # Yellow
-Blue='\033[0;34m'         # Blue
-Purple='\033[0;35m'       # Purple
 Cyan='\033[0;36m'         # Cyan
-White='\033[0;37m'        # White
 
 ## Functions
 
@@ -38,11 +35,12 @@ function rebalance () {
 
     current_index="$((current_index + 1))"
     progress_percent=$(echo "scale=2; ${current_index}*100/${file_count}" | bc)
-    color_echo "$Green" "Progress -- Files: ${current_index}/${file_count} (${progress_percent}%)" 
+    color_echo "$Cyan" "Progress -- Files: ${current_index}/${file_count} (${progress_percent}%)" 
    
     tmp_extension=".balance"
+    tmp_file_path="${file_path}${tmp_extension}"
 
-    echo "Copying '${file_path}' to '${file_path}${tmp_extension}'..."
+    echo "Copying '${file_path}' to '${tmp_file_path}'..."
     if [[ "${OSTYPE,,}" == "linux-gnu"* ]]; then
         # Linux
 
@@ -50,18 +48,9 @@ function rebalance () {
         # -d -- keep symlinks (dont copy target)
         # -x -- stay on one system
         # -p -- preserve ACLs too
-        cp -adxp "${file_path}" "${file_path}${tmp_extension}"
-    elif [[ "${OSTYPE,,}" == "darwin"* ]]; then
-        # Mac OSX
-
-        # (should be the same as bsd, but untested!)
-
-        # -a -- keep attributes
-        # -d -- keep symlinks (dont copy target)
-        # -x -- stay on one system
-        # -p -- preserve ACLs too
-        cp -adxp "${file_path}" "${file_path}${tmp_extension}"
-    elif [[ "${OSTYPE,,}" == "freebsd"* ]]; then
+        cp -adxp "${file_path}" "${tmp_file_path}"
+    elif [[ "${OSTYPE,,}" == "darwin"* ]] || [[ "${OSTYPE,,}" == "freebsd"* ]]; then
+        # Mac OS
         # FreeBSD
 
         # -a -- Archive mode.  Same as -RpP.
@@ -69,17 +58,66 @@ function rebalance () {
         # -p -- Cause cp to preserve the following attributes of each source file
         #       in the copy: modification time, access time, file flags, file mode,
         #       ACL, user ID, and group ID, as allowed by permissions.
-        cp -axp "${file_path}" "${file_path}${tmp_extension}"
+        cp -axp "${file_path}" "${tmp_file_path}"
     else
         echo "Unsupported OS type: $OSTYPE"
         exit 1
     fi
 
+    # compare copy against original to make sure nothing went wrong
+    echo "Comparing copy against original..."
+    if [[ "${OSTYPE,,}" == "linux-gnu"* ]]; then
+        # Linux
+
+        # file attributes
+        original_md5=$(lsattr "${file_path}" | awk '{print $1}' | md5sum -b | awk '{print $1}')
+        # file permissions, owner, group
+        original_md5="${original_md5} $(ls -lha "${file_path}" | awk '{print $1 " " $3 " " $4}' | md5sum -b | awk '{print $1}')"
+        # file content
+        original_md5="${original_md5} $(md5sum -b "${file_path}" | awk '{print $1}')"
+
+        # file attributes
+        copy_md5=$(lsattr "${tmp_file_path}" | awk '{print $1}' | md5sum -b | awk '{print $1}')
+        # file permissions, owner, group
+        copy_md5="${copy_md5} $(ls -lha "${tmp_file_path}" | awk '{print $1 " " $3 " " $4}' | md5sum -b | awk '{print $1}')"
+        # file content
+        copy_md5="${copy_md5} $(md5sum -b "${tmp_file_path}" | awk '{print $1}')"
+
+    elif [[ "${OSTYPE,,}" == "darwin"* ]] || [[ "${OSTYPE,,}" == "freebsd"* ]]; then
+        # Mac OS
+        # FreeBSD
+
+        # file attributes
+        original_md5=$(lsattr "${file_path}" | awk '{print $1}' | md5 -q)
+        # file permissions, owner, group
+        original_md5="${original_md5} $(ls -lha "${file_path}" | awk '{print $1 " " $3 " " $4}' | md5 -q)"
+        # file content
+        original_md5="${original_md5} $(md5 -q "${file_path}")"
+
+        # file attributes
+        copy_md5=$(lsattr "${tmp_file_path}" | awk '{print $1}' | md5 -q)
+        # file permissions, owner, group
+        copy_md5="${copy_md5} $(ls -lha "${tmp_file_path}" | awk '{print $1 " " $3 " " $4}' | md5 -q)"
+        # file content
+        copy_md5="${copy_md5} $(md5 -q "${tmp_file_path}")"
+
+    else
+        echo "Unsupported OS type: $OSTYPE"
+        exit 1
+    fi
+
+    if [[ "${original_md5,,}" == "${copy_md5,,}"* ]]; then
+        color_echo "${Green}" "MD5 OK"
+    else
+        color_echo "${Red}" "MD5 FAILED: ${original_md5} != ${copy_md5}"
+        exit 1
+    fi
+
     echo "Removing original '${file_path}'..."
     rm "${file_path}"
 
     echo "Renaming temporary copy to original '${file_path}'..."
-    mv "${file_path}${tmp_extension}" "${file_path}"
+    mv "${tmp_file_path}" "${file_path}"
 }
 
 root_path=$1