diff --git a/pym/cl_install.py b/pym/cl_install.py
index dda6ed9..1f896dc 100644
--- a/pym/cl_install.py
+++ b/pym/cl_install.py
@@ -747,15 +747,8 @@ class cl_install(color_print):
         else:
             return dirsFiles
 
-    def setInstallOptions(self, listDisks, listBinds, listSwaps, listUsers,
-                          mbrDisk):
+    def setDisks(self,listDisks,listBinds,listSwaps):
         """Set data for installation partitions"""
-        if listUsers:
-            migrateUsers = list(set(listUsers))
-            migrateUsers.sort()
-            migrateUsers = ["root"] + filter(lambda x: x!="root", migrateUsers)
-            self.clVars.Set('cl_migrate_user', migrateUsers, force=True)
-
         convObj = convertDictOpt(self.clVars)
         try:
             listDisks = map(convObj, listDisks)
@@ -775,6 +768,9 @@ class cl_install(color_print):
                 self.printWARNING(_("See 'man mount' for file system") + " "+\
                 ", ".join(convObj.listFileSystemCorrupted))
             return False
+        # break perform if disk params empty and os_install_dev_from empty
+        if not (listDisks or listSwaps or listBinds):
+            return True
 
         usedDevicesOnlyDisks = map(lambda x:x['dev'],listDisks)
         usedDevicesOnlySwap = map(lambda x:x['dev'],listSwaps)
@@ -823,7 +819,7 @@ class cl_install(color_print):
                                     x[1] != "none",
                            zip(srcMountPoints,destMountPoints))
         if wrongBind:
-            self.printERROR(_("Incorrect moint point (bind '%s' to '%s')")%
+            self.printERROR(_("Incorrect mount point (bind '%s' to '%s')")%
                             (wrongBind[0][0],wrongBind[0][1]))
             return False
 
@@ -833,7 +829,7 @@ class cl_install(color_print):
                   filter(lambda x: not x.startswith("/"),
                          map(lambda x:x['srcMountPoint'],listBinds))
         if wrongMP:
-            self.printERROR(_("Incorrect moint point '%s'")%wrongMP[0])
+            self.printERROR(_("Incorrect mount point '%s'")%wrongMP[0])
             return False
 
         # detect duplicate devices
@@ -870,6 +866,8 @@ class cl_install(color_print):
                                 self.clVars.Get('os_install_disk_mount'),
                                 self.clVars.Get('os_install_disk_format'),
                                 self.clVars.Get('os_install_disk_options'))))
+        curDevMount = dict(zip(self.clVars.Get('os_disk_dev'),
+                                self.clVars.Get('os_disk_mount')))
         dictMountDev = dict(zip(self.clVars.Get('os_install_disk_mount'),
                             self.clVars.Get('os_disk_dev')))
         # update current variable by cmd params
@@ -882,7 +880,7 @@ class cl_install(color_print):
             isFormat = diskData['isFormat']
             if mountPoint == "none":
                 mountPoint = ""
-            curMP = devMount[dev]['mountPoint']
+            curMP = curDevMount[dev]
             if curMP and ( curMP != mountPoint and isFormat or curMP == '/' ):
                 self.printERROR(_("Specified disk '%s' mounted to")\
                                   %dev + " " + _("'%s' in current system")\
@@ -948,8 +946,39 @@ class cl_install(color_print):
             self.printERROR(_("Need specify root partition"))
             return False
         self.clVars.Set('os_install_root_dev',rootDev,True)
+        return True
+
+    def setUsers(self,listUsers):
+        """Set users data (migration)"""
+        if listUsers:
+            migrateUsers = list(set(listUsers))
+            migrateUsers.sort()
+            migrateUsers = ["root"] + filter(lambda x: x!="root", migrateUsers)
+            self.clVars.Set('cl_migrate_user', migrateUsers, force=True)
+        return True
 
-        # update listDisksOptions, listSwapsOptions and listBindOptions
+    def setMBR(self, mbrDisk):
+        """Set mbr by param or get from variables"""
+        bootDiskGrub = ""
+        if mbrDisk == "off":
+            self.clVars.Set('os_install_mbr',"",force=True)
+        elif mbrDisk:
+            listbootDiskGrub = map(lambda x: x[0],
+                               filter(lambda x: "/dev/"+x[0]==mbrDisk,
+                                zip(self.clVars.Get('os_device_dev'),
+                                    self.clVars.Get('os_device_map'))))
+            if filter(lambda x: "/dev/%s"%x == mbrDisk,
+                      self.clVars.Get('os_device_dev')):
+                self.clVars.Set('os_install_mbr',mbrDisk.strip('/dev/'),
+                                force=True)
+            else:
+                self.printERROR(_("Cann't found disk '%s'")%mbrDisk)
+                return False
+        return True
+
+    def createListOptions(self):
+        """Create listDisksOptions, listSwapsOptions and listBindOptions
+        by variables"""
         diskData = zip(self.clVars.Get('os_disk_dev'),
                       self.clVars.Get('os_install_disk_mount'),
                       self.clVars.Get('os_install_disk_format'),
@@ -976,6 +1005,7 @@ class cl_install(color_print):
 
         self.listBindsOptions = map(listToOptDictBind,bindData)
 
+        # update system id
         osDiskDevices = self.clVars.Get('os_disk_dev')
 
         updateIdDict = dict(map(lambda x:(x[0],x[2]),filter(lambda x:x[1]!=x[2],
@@ -987,25 +1017,18 @@ class cl_install(color_print):
                 disk['systemId'] = updateIdDict[disk['dev']]
             else:
                 disk['systemId'] = None
-
-        # use or not MBR
-        bootDiskGrub = ""
-        if mbrDisk == "off":
-            self.clVars.Set('os_install_mbr',"",force=True)
-        elif mbrDisk:
-            listbootDiskGrub = map(lambda x: x[0],
-                               filter(lambda x: "/dev/"+x[0]==mbrDisk,
-                                zip(self.clVars.Get('os_device_dev'),
-                                    self.clVars.Get('os_device_map'))))
-            if filter(lambda x: "/dev/%s"%x == mbrDisk,
-                      self.clVars.Get('os_device_dev')):
-                self.clVars.Set('os_install_mbr',mbrDisk.strip('/dev/'),
-                                force=True)
-            else:
-                self.printERROR(_("Cann't found disk '%s'")%mbrDisk)
-                return False
         return True
 
+    def setInstallOptions(self, listDisks, listBinds, listSwaps, listUsers,
+                          mbrDisk):
+        """Set install options (set users, disks and mbr"""
+        if self.setUsers(listUsers) and \
+            self.setDisks(listDisks,listBinds,listSwaps) and \
+            self.setMBR(mbrDisk):
+            return self.createListOptions()
+        else:
+            return False
+
     def getDeviceByField(self,field,value, secondPrefix="os_disk"):
         """Get device by fields (install load format uuid grub part name)"""
         return self.getFieldByField('dev',field,value,