diff --git a/src/install.sh b/src/install.sh
index 2c73c88..44d48fb 100644
--- a/src/install.sh
+++ b/src/install.sh
@@ -489,15 +489,6 @@ detectLegacy() {
   local dir="$1"
   local find find2 desc
 
-  find=$(find "$dir" -maxdepth 1 -type d -iname win51 | head -n 1)
-  find2=$(find "$dir" -maxdepth 1 -type f -iname SETUPXP.HTM | head -n 1)
-
-  if [ -n "$find" ] || [ -n "$find2" ]; then
-    [ -d "$dir/AMD64" ] && DETECTED="winxpx64" || DETECTED="winxpx86"
-    desc=$(printEdition "$DETECTED" "Windows XP")
-    info "Detected: $desc" && return 0
-  fi
-
   find=$(find "$dir" -maxdepth 1 -type d -iname win95 | head -n 1)
 
   if [ -n "$find" ]; then
@@ -522,6 +513,30 @@ detectLegacy() {
     info "Detected: $desc" && return 0
   fi
 
+  find=$(find "$dir" -maxdepth 1 -type d -iname win51 | head -n 1)
+  find2=$(find "$dir" -maxdepth 1 -type f -iname setupxp.htm | head -n 1)
+
+  if [ -n "$find" ] || [ -n "$find2" ] || [ -f "$dir/WIN51AP" ] || [ -f "$dir/WIN51IC" ]; then
+    [ -d "$dir/AMD64" ] && DETECTED="winxpx64" || DETECTED="winxpx86"
+    desc=$(printEdition "$DETECTED" "Windows XP")
+    info "Detected: $desc" && return 0
+  fi
+
+  if [ -f "$dir/CDROM_NT.5" ]; then
+    desc="Windows 2000"
+    info "Detected: $desc" && error "$desc is not supported yet!" && exit 54
+  fi
+
+  if [ -f "$dir/WIN51AA" ] || [ -f "$dir/WIN51AD" ] || [ -f "$dir/WIN51AS" ] || [ -f "$dir/WIN51MA" ] || [ -f "$dir/WIN51MD" ]; then
+    desc="Windows Server 2003"
+    info "Detected: $desc" && error "$desc is not supported yet!" && exit 54
+  fi
+  
+  if [ -f "$dir/WIN51IA" ] || [ -f "$dir/WIN51IB" ] || [ -f "$dir/WIN51ID" ] || [ -f "$dir/WIN51IL" ] || [ -f "$dir/WIN51IS" ]; then
+    desc="Windows Server 2003"
+    info "Detected: $desc" && error "$desc is not supported yet!" && exit 54
+  fi
+
   return 1
 }