diff --git a/files/installer.sh b/files/installer.sh
index 17db03929371e72229c00bdd15f08856e37c3ec0..4f29451874fae239b131fb3823e4c89ab2405024 100755
--- a/files/installer.sh
+++ b/files/installer.sh
@@ -15,7 +15,7 @@ export DISK_DEVICES
 
 # convertSizeToByte - converts a given size to byte
 # parameter:
-#  $1 - size in "kB", "kiB", "MB", "MiB", "GB", "GiB", "TB" or "TiB"
+#  $1 - size in "kB", "MB", "MiB", "GB", "GiB", "TB" or "TiB"
 # return:
 #  size in byte
 convertSizeToByte() {
@@ -24,43 +24,43 @@ convertSizeToByte() {
   local factor=1
  
   case ${unit} in
-    "B") factor=1;;
-    "kB") factor=1000 ;;
-    "MB") factor=1000000 ;;
-    "GB") factor=1000000000 ;;
-    "TB") factor=1000000000000 ;;
-    "kiB") factor=1024 ;;
-    "MiB") factor=1048576 ;;
-    "GiB") factor=1073741824 ;;
-    "TiB") factor=1099511627776 ;;
-    *) factor=1 ;;
+   "B") factor=1;;
+   "kB") factor=1000 ;;
+   "MB") factor=1000000 ;;
+   "GB") factor=1000000000 ;;
+   "TB") factor=1000000000000 ;;
+   "kiB") factor=1024 ;;
+   "MiB") factor=1048576 ;;
+   "GiB") factor=1073741824 ;;
+   "TiB") factor=1099511627776 ;;
+   *) factor=1 ;;
   esac
 
   res=$(dc -e "0k ${value} ${factor} * p")
-
+  
   echo "${res%.*}"
 }
 
 # convertByteToSize - converts a byte size to a given unit 
 # parameter:
 #  $1 - size in byte
-#  $2 - unit like "kB", "kiB", "MB", "MiB", "GB", "GiB", "TB" or "TiB"
+#  $2 - unit like "kB", "MB", "MiB", "GB", "GiB", "TB" or "TiB"
 # return:
 #  rounded size with unit
 convertByteToSize() {
   local factor=1
 
   case $2 in
-    "B") factor=1;;
-    "kB") factor=1000 ;;
-    "MB") factor=1000000 ;;
-    "GB") factor=1000000000 ;;
-    "TB") factor=1000000000000 ;;
-    "kiB") factor=1024 ;;
-    "MiB") factor=1048576 ;;
-    "GiB") factor=1073741824 ;;
-    "TiB") factor=1099511627776 ;;
-    *) factor=1 ;;
+   "B") factor=1;;
+   "kB") factor=1000 ;;
+   "MB") factor=1000000 ;;
+   "GB") factor=1000000000 ;;
+   "TB") factor=1000000000000 ;;
+   "kiB") factor=1024 ;;
+   "MiB") factor=1048576 ;;
+   "GiB") factor=1073741824 ;;
+   "TiB") factor=1099511627776 ;;
+   *) factor=1 ;;
   esac
 
   res=$(dc -e "2k $1 ${factor} / p")
@@ -70,20 +70,20 @@ convertByteToSize() {
 # validateDiskScheme - checks the scheme of a disk device
 # parameter:
 #  $1 - disk device name
-# return:
+# retur:
 #  0 - no changes
 #  1 - label has changed
 validateScheme() {
-  local lbl=$(echo $diskdata[0] | cut -f 6 -d ":")
-  local retval=1
-  local scheme=$(eval echo \$DISK_$(echo $1 | tr [a-z] [A-Z])_SCHEME)
-
-  if [ "x${scheme}" = "x${lbl}" ];
-  then
-    retval=0
-  fi
+ local lbl=$(echo $diskdata[0] | cut -f 6 -d ":")
+ local retval=1
+ local scheme=$(eval echo \$DISK_$(echo $1 | tr [a-z] [A-Z])_SCHEME)
+ 
+ if [ "x${scheme}" = "x${lbl}" ];
+ then
+   retval=0
+ fi
 
-  return ${retval}
+ return ${retval}
 }
 
 # initialDiskScheme - initials the scheme of a disk device
@@ -111,38 +111,38 @@ initialDiskScheme() {
 #  0 - no changes
 #  1 - partions has changed
 validateDiskPartitions() {
-  declare -a parts=()
-  local retval=0
- 
-  for part in $(eval "for p in \${DISK_$(echo $1 | tr [a-z] [A-Z])_PARTITIONS[@]}; do echo \$p; done ")
-  do
-    parts+=(${part})
-  done
- 
-  if [ ${#parts[@]} -eq $((${#diskdata[@]} - 1)) ];
-  then
-    for idx in $(seq 1 1 ${#parts[@]})
-    do
-      gsize=$(convertSizeToByte $(echo ${parts[$((${idx} - 1))]} | cut -f 1 -d ":"))
-      dsize=$(convertSizeToByte $(echo ${diskdata[${idx}]} | cut -f 4 -d ":"))
-      diffperc=$(dc -e "2k $dsize $gsize - 100 * $gsize / p" | sed -e "s/^-//g")
- 
-      if [ -n "x${diffperc%.*}" ];
-      then
-        diffperc=0
-      fi
- 
-      #if difference between current disk size and given disk size more than 1% then partitions has changed
-      if [ ${diffperc%.*} -gt 1 ];
-      then
-        retval=1
-      fi
-    done
-  else
-    retval=1
-  fi
- 
-  return ${retval}
+ declare -a parts=()
+ local retval=0
+
+ for part in $(eval "for p in \${DISK_$(echo $1 | tr [a-z] [A-Z])_PARTITIONS[@]}; do echo \$p; done ")
+ do
+   parts+=(${part})
+ done
+
+ if [ ${#parts[@]} -eq $((${#diskdata[@]} - 1)) ];
+ then
+   for idx in $(seq 1 1 ${#parts[@]})
+   do
+     gsize=$(convertSizeToByte $(echo ${parts[$((${idx} - 1))]} | cut -f 1 -d ":"))
+     dsize=$(convertSizeToByte $(echo ${diskdata[${idx}]} | cut -f 4 -d ":"))
+     diffperc=$(dc -e "2k $dsize $gsize - 100 * $gsize / p" | sed -e "s/^-//g")
+
+     if [ -n "x${diffperc%.*}" ];
+     then
+       diffperc=0
+     fi
+
+     #if difference between current disk size and given disk size more than 1% then partitions has changed
+     if [ ${diffperc%.*} -gt 1 ];
+     then
+       retval=1
+     fi
+   done
+ else
+   retval=1
+ fi
+
+ return ${retval}
 }
 
 # initialDiskPartitions - initial the partitions of a disk device
@@ -151,21 +151,21 @@ validateDiskPartitions() {
 # return:
 #  none 
 initialDiskPartitions() {
-  declare -a parts=()
-  local start=$(convertSizeToByte "1MiB")
-  local fs=""
-  local size=""
-  local end=""
- 
-  for part in $(eval "for p in \${DISK_$(echo $1 | tr [a-z] [A-Z])_PARTITIONS[@]}; do echo \$p; done ")
-  do
-    fs=$(echo ${part} | cut -f 2 -d ":")
-    fsize=$(echo ${part} | cut -f 1 -d ":")
-    size=$(convertSizeToByte $(echo ${part} | cut -f 1 -d ":"))
-    end=$((${start} + ${size}))
-    parted -a optimal -s -m /dev/$1 mkpart primary ${fs} $(convertByteToSize ${start} "MiB") $(convertByteToSize ${end} "MiB")
-    start=${end}
-  done
+ declare -a parts=()
+ local start=$(convertSizeToByte "1MiB")
+ local fs=""
+ local size=""
+ local end=""
+
+ for part in $(eval "for p in \${DISK_$(echo $1 | tr [a-z] [A-Z])_PARTITIONS[@]}; do echo \$p; done ")
+ do
+   fs=$(echo ${part} | cut -f 2 -d ":")
+   fsize=$(echo ${part} | cut -f 1 -d ":")
+   size=$(convertSizeToByte $(echo ${part} | cut -f 1 -d ":"))
+   end=$((${start} + ${size}))
+   parted -a optimal -s -m /dev/$1 mkpart primary ${fs} $(convertByteToSize ${start} "MiB") $(convertByteToSize ${end} "MiB")
+   start=${end}
+ done
 }
 
 for disk in ${DISK_DEVICES[@]}