diff --git a/pym/calculate/lib/utils/device.py b/pym/calculate/lib/utils/device.py
index 3732194..85b1cd0 100644
--- a/pym/calculate/lib/utils/device.py
+++ b/pym/calculate/lib/utils/device.py
@@ -564,14 +564,12 @@ class MdadmCommand(object):
     def stop_raid(self, devraid):
         if not self.mdadm_cmd:
             return ""
-        pvdata = files.process(self.mdadm_cmd, "-S", devraid)
-        return pvdata.success()
+        return files.process(self.mdadm_cmd, "-S", devraid).success()
 
-    def zero_superblock(self, devices):
+    def zero_superblock(self, dev):
         if not self.mdadm_cmd:
             return ""
-        for dev in devices:
-            files.process(self.mdadm_cmd, "--zero-superblock", dev).success()
+        return files.process(self.mdadm_cmd, "--zero-superblock", dev).success()
 
 class Raid(object):
     def __init__(self, commander):
@@ -606,12 +604,16 @@ class Raid(object):
                 yield devname
 
     def remove_raid(self, raidname):
-        raidparts = self.devices(udev.get_syspath(name=raidname))
+        # итератор не подходит, так как после остановки RAID
+        # не получится узнать его диски
+        raidparts = list(self.devices(udev.get_syspath(name=raidname)))
         failed = False
-        self.commander.stop_raid(raidname)
+        failed |= not (self.commander.stop_raid(raidname) or
+                       self.commander.stop_raid(raidname))
         for dev in raidparts:
-            self.commander.zero_superblock(dev)
-        return failed
+            failed |= not (self.commander.zero_superblock(dev) or
+                           self.commander.zero_superblock(dev))
+        return not failed
 
 def loadEfiVars():
     """