diff --git a/forms/format_dlgs.py b/forms/format_dlgs.py
new file mode 100644
--- /dev/null
+++ b/forms/format_dlgs.py
@@ -0,0 +1,78 @@
+from PyQt5 import QtWidgets
+
+from floppyemu import format_images
+from ui import format_dialog, format_one_dialog
+
+
+class FormatManyDialog(QtWidgets.QDialog, format_dialog.Ui_Dialog):
+    def __init__(self, device, temp_path, parent=None):
+        super().__init__(parent)
+
+        self.__device = device
+        self.__temp_path = temp_path
+
+        self.setupUi(self)
+
+    @staticmethod
+    def show_dialog(device, temp_path):
+        dlg = FormatManyDialog(device, temp_path)
+        dlg.exec()
+
+    def accept(self):
+        try:
+            if self.rb_size_720.isChecked():
+                format_images(self.__device, ((self.sb_from.value(), self.sb_to.value() + 1),), self.__temp_path, 720)
+            elif self.rb_size_1440.isChecked():
+                format_images(self.__device, ((self.sb_from.value(), self.sb_to.value() + 1),), self.__temp_path, 1440)
+            else:
+                QtWidgets.QMessageBox.critical(
+                    self, 'Error',
+                    'Please choose image size before proceeding'
+                )
+                return
+        except PermissionError:
+            QtWidgets.QMessageBox.critical(
+                self, 'Permission error',
+                'You have no access to the device %s. '
+                'Please restart program as user with proper rights' % (self.__device,)
+            )
+            return
+
+        super().accept()
+
+
+class FormatOneDialog(QtWidgets.QDialog, format_one_dialog.Ui_Dialog):
+    def __init__(self, index, device, temp_path, parent=None):
+        super().__init__(parent)
+        self.__index = index
+        self.__device = device
+        self.__temp_path = temp_path
+
+        self.setupUi(self)
+
+    @staticmethod
+    def show_dialog(index, device, temp_path):
+        dlg = FormatOneDialog(index, device, temp_path)
+        dlg.exec()
+
+    def accept(self):
+        try:
+            if self.rb_size_720.isChecked():
+                format_images(self.__device, (self.__index, ), self.__temp_path, 720)
+            elif self.rb_size_1440.isChecked():
+                format_images(self.__device, (self.__index, ), self.__temp_path, 1440)
+            else:
+                QtWidgets.QMessageBox.critical(
+                    self, 'Error',
+                    'Please choose image size before proceeding'
+                )
+                return
+        except PermissionError:
+            QtWidgets.QMessageBox.critical(
+                self, 'Permission error',
+                'You have no access to the device %s. '
+                'Please restart program as user with proper rights' % (self.__device,)
+            )
+            return
+
+        super().accept()