Improve wording

src/lib/y2storage/boot_requirements_strategies/base.rb

@@ -150,7 +150,7 @@ def missing_partition_for?(volume)
       # @return [SetupError]
       def unknown_boot_disk_error
         # TRANSLATORS: error message
-        error_message = _("Unknwon boot disk")
+        error_message = _("Boot requirements cannot be determined because there is no '/' mount point")
         SetupError.new(message: error_message)
       end
     end

src/lib/y2storage/boot_requirements_strategies/zipl.rb

@@ -90,7 +90,10 @@ def zipl_partition(target)
       # @return [SetupError]
       def unsupported_boot_disk_error
         # TRANSLATORS: error message
-        error_message = _("Current boot disk cannot be used for booting")
+        error_message = _(
+          "Looks like the system is going to be installed on a FBA " \
+          "or LDL device. Booting from such device is not supported"
+        )
         SetupError.new(message: error_message)
       end
     end

test/y2partitioner/setup_errors_presenter_test.rb

@@ -70,7 +70,7 @@
         let(:product_errors) { [] }
 
         it "contains a general error message for boot errors" do
-          expect(subject.to_html).to match(/could not load/)
+          expect(subject.to_html).to match(/not be able to boot/)
         end
 
         it "does not contain a general error message for product errors" do

test/y2storage/boot_requirements_errors_test.rb

@@ -90,7 +90,7 @@
         expect(checker.errors).to all(be_a(Y2Storage::SetupError))
 
         message = checker.errors.first.message
-        expect(message).to match(/boot disk/)
+        expect(message).to match(/there is no '\/'/)
       end
     end
 
@@ -100,7 +100,7 @@
         expect(checker.errors).to all(be_a(Y2Storage::SetupError))
 
         message = checker.errors.first.message
-        expect(message).to match(/cannot be used/)
+        expect(message).to match(/is not supported/)
       end
     end