Исправлено копирование ядра и initrd на flash

pym/builder/builder.py

@@ -1002,7 +1002,8 @@ class Builder(Update):
         for fn in listDirectory(boot_dn, fullPath=True):
             if fn not in ("vmlinuz", "initrd"):
                 try:
-                    os.unlink(fn)
+                    if not path.isdir(fn):
+                        os.unlink(fn)
                 except (IOError, OSError) as e:
                     self.printERROR(str(e))
                     raise BuilderError(