diff --git a/xCAT/postscripts/otherpkgs b/xCAT/postscripts/otherpkgs
index 1161d1836..0e4b05964 100755
--- a/xCAT/postscripts/otherpkgs
+++ b/xCAT/postscripts/otherpkgs
@@ -386,8 +386,32 @@ fi
                              array_set_element os_path $index $ospkgdir_ok
                          done
                      fi   # x86_64
+                elif ( pmatch "$OSVER" "rhels8*" ); then
+                     if [ $ARCH == "x86_64" ]; then
+                         for arg in "BasOS" "AppStream"
+                         do
+                             ospkgdir_ok="$ospkgdir/$arg"
+                             array_set_element os_path $index $ospkgdir_ok
+                             index=$(expr $index + 1)
+                         done
+                     fi   # x86_64
                 fi # if...elif..fi
              fi  # eq default_pkgdir
+        elif ( pmatch "$OSVER" "centos*" ); then
+            #default_pkgdir="$INSTALLDIR/$OSVER/$ARCH"
+            if [ $dir == $default_pkgdir ] || [ $dir == "$default_pkgdir/" ]; then
+
+                if ( pmatch "$OSVER" "centos8*" ); then
+                   if [ $ARCH == "x86_64" ]; then
+                        for arg in "BaseOS" "AppStream"
+                        do
+                            ospkgdir_ok="$ospkgdir/$arg"
+                            array_set_element os_path $index $ospkgdir_ok
+                            index=$(expr $index + 1)
+                        done
+                   fi
+                fi
+            fi
           fi    # match rhel*
 
           index=$(expr $index + 1)