diff --git a/src/fs/unknown.cpp b/src/fs/unknown.cpp
index 156862c..6b441e2 100644
--- a/src/fs/unknown.cpp
+++ b/src/fs/unknown.cpp
@@ -13,6 +13,7 @@ namespace FS
 {
 
 FileSystem::CommandSupportType unknown::m_Move = FileSystem::cmdSupportCore;
+FileSystem::CommandSupportType unknown::m_Copy = FileSystem::cmdSupportCore;
 
 unknown::unknown(qint64 firstsector, qint64 lastsector, qint64 sectorsused, const QString& label, const QVariantMap& features) :
     FileSystem(firstsector, lastsector, sectorsused, label, features, FileSystem::Type::Unknown)
diff --git a/src/fs/unknown.h b/src/fs/unknown.h
index 5f06943..a279370 100644
--- a/src/fs/unknown.h
+++ b/src/fs/unknown.h
@@ -37,7 +37,12 @@ public:
         return m_Move;
     }
 
+    CommandSupportType supportCopy() const override {
+        return m_Copy;
+    }
+
     static CommandSupportType m_Move;
+    static CommandSupportType m_Copy;
 };
 }