diff --git a/pym/install/install.py b/pym/install/install.py
index 7c0242f..5381246 100644
--- a/pym/install/install.py
+++ b/pym/install/install.py
@@ -241,7 +241,7 @@ class Install:
                               "--target=x86_64-efi",
                               "--efi-directory=%s"%
                               target.getEfiDirectory(),
-                              "-f"]
+                              "--force"]
             # в случае установки на usb-hdd EFI загрузчик не прописывается
             # в efivars
             if self.clVars.Get('os_install_root_type') == 'usb-hdd':
@@ -281,8 +281,8 @@ class Install:
             # если GRUB2 версии 2.00 и выше, обычная установка требует
             # параметра --target=i386-pc, иначе GRUB2 может попытаться
             # прописать себя как UEFI
-            if filter(lambda x:"2.00" in x,
-                           process(cmdGrubInstall,'-v')):
+            if filter(lambda x:"2." in x,
+                           process(cmdGrubInstall,'--version')):
                 platform = ["--target=i386-pc"]
             else:
                 platform = []
@@ -291,7 +291,7 @@ class Install:
                 grubProcess = process(cmdGrubInstall,
                                   "--boot-directory=%s"%pathJoin(prefixBoot,
                                   target.getBootDirectory()),
-                                  mbrDisk, "-f", *platform,
+                                  mbrDisk, "--force", *platform,
                                   stderr=STDOUT,envdict=os.environ)
                 if grubProcess.failed():
                     raise DistributiveError(_("Failed to install the bootloader"))
diff --git a/pym/install/variables/system.py b/pym/install/variables/system.py
index bbe5926..08a0006 100644
--- a/pym/install/variables/system.py
+++ b/pym/install/variables/system.py
@@ -533,8 +533,8 @@ class VariableOsGrub2Path(Variable):
             return grubInstall
         # find grub-install and check, that this is grub2-install (ver 1.99)
         grubInstall = getProgPath('/usr/sbin/grub-install')
-        if grubInstall and filter(lambda x:"1.99" in x or "2.00" in x,
-                           process(grubInstall,'-v')):
+        if grubInstall and filter(lambda x:"1.99" in x or "2." in x,
+                           process(grubInstall,'--version')):
             return grubInstall
         return ""