diff --git a/src/apps/bootmanager/DrivesPage.cpp b/src/apps/bootmanager/DrivesPage.cpp
index 0babdb7d4a..1bb9acfbee 100644
--- a/src/apps/bootmanager/DrivesPage.cpp
+++ b/src/apps/bootmanager/DrivesPage.cpp
@@ -195,6 +195,10 @@ DriveItem::DrawItem(BView* owner, BRect frame, bool complete)
 				message = B_TRANSLATE_COMMENT("Incompatible format!",
 					"Cannot install");
 				break;
+			case B_READ_ONLY_DEVICE:
+				message = B_TRANSLATE_COMMENT("Read only!",
+					"Cannot install");
+				break;
 			default:
 				message = B_TRANSLATE_COMMENT("Cannot access!",
 					"Cannot install");
diff --git a/src/apps/bootmanager/LegacyBootMenu.cpp b/src/apps/bootmanager/LegacyBootMenu.cpp
index 185b31d376..297e29789c 100644
--- a/src/apps/bootmanager/LegacyBootMenu.cpp
+++ b/src/apps/bootmanager/LegacyBootMenu.cpp
@@ -325,6 +325,9 @@ LegacyBootMenu::CanBeInstalled(const BootDrive& drive)
 	if (visitor.FirstOffset() < (int)sizeof(kBootLoader))
 		return B_PARTITION_TOO_SMALL;
 
+	if (device.IsReadOnlyMedia())
+		return B_READ_ONLY_DEVICE;
+
 	return B_OK;
 }