diff --git a/subiquity/common/types.py b/subiquity/common/types.py
index 73e05b8f..712f2699 100644
--- a/subiquity/common/types.py
+++ b/subiquity/common/types.py
@@ -388,6 +388,7 @@ class GuidedDisallowedCapabilityReason(enum.Enum):
     TOO_SMALL = enum.auto()
     CORE_BOOT_ENCRYPTION_UNAVAILABLE = enum.auto()
     NOT_UEFI = enum.auto()
+    THIRD_PARTY_DRIVERS = enum.auto()
 
 
 @attr.s(auto_attribs=True)
diff --git a/subiquity/server/controllers/filesystem.py b/subiquity/server/controllers/filesystem.py
index 6919d871..fbb4aec1 100644
--- a/subiquity/server/controllers/filesystem.py
+++ b/subiquity/server/controllers/filesystem.py
@@ -419,7 +419,23 @@ class FilesystemController(SubiquityController, FilesystemManipulator):
                     info.capability_info.disallow_if(
                         lambda cap: cap.is_core_boot(),
                         GuidedDisallowedCapabilityReason.NOT_UEFI,
-                        "Enhanced secure boot options only available on UEFI systems.",
+                        _(
+                            "Enhanced secure boot options only available on UEFI "
+                            "systems."
+                        ),
+                    )
+                if self.app.base_model.source.search_drivers:
+                    log.debug(
+                        "Disabling core boot based install options as third-party "
+                        "drivers selected"
+                    )
+                    info.capability_info.disallow_if(
+                        lambda cap: cap.is_core_boot(),
+                        GuidedDisallowedCapabilityReason.THIRD_PARTY_DRIVERS,
+                        _(
+                            "Enhanced secure boot options cannot currently install "
+                            "third party drivers."
+                        ),
                     )
                 self._variation_info[name] = info
             elif catalog_entry.type.startswith("dd-"):
diff --git a/subiquity/server/controllers/tests/test_filesystem.py b/subiquity/server/controllers/tests/test_filesystem.py
index f891d789..36fd47cb 100644
--- a/subiquity/server/controllers/tests/test_filesystem.py
+++ b/subiquity/server/controllers/tests/test_filesystem.py
@@ -1144,6 +1144,7 @@ class TestCoreBootInstallMethods(IsolatedAsyncioTestCase):
         self.app.dr_cfg = DRConfig()
         self.app.dr_cfg.systems_dir_exists = True
         self.app.controllers.Source.get_handler.return_value = TrivialSourceHandler("")
+        self.app.base_model.source.search_drivers = False
         self.fsc = FilesystemController(app=self.app)
         self.fsc._configured = True
         self.fsc.model = make_model(Bootloader.UEFI)