diff --git a/include/DMRaid.h b/include/DMRaid.h
index 2bc61b2a..b262325e 100644
--- a/include/DMRaid.h
+++ b/include/DMRaid.h
@@ -66,6 +66,7 @@ public:
 	bool delete_dev_map_entry( const Partition & partition, OperationDetail & operationdetail ) ;
 	bool purge_dev_map_entries( const Glib::ustring & dev_path ) ;
 	bool update_dev_map_entry( const Partition & partition, OperationDetail & operationdetail ) ;
+	bool is_member(const Glib::ustring& member_path);
 	bool is_member_active(const Glib::ustring& member_path);
 	const Glib::ustring& get_array(const Glib::ustring& member_path);
 
diff --git a/src/DMRaid.cc b/src/DMRaid.cc
index f8d71708..a21741ef 100644
--- a/src/DMRaid.cc
+++ b/src/DMRaid.cc
@@ -527,9 +527,8 @@ bool DMRaid::update_dev_map_entry( const Partition & partition, OperationDetail
 }
 
 
-// Return whether the named device (e.g. "/dev/sdc") is a member of an active DMRaid array
-// or not.
-bool DMRaid::is_member_active(const Glib::ustring& member_path)
+// Return whether the named device (e.g. "/dev/sdc") is a member of a DMRaid array or not.
+bool DMRaid::is_member(const Glib::ustring& member_path)
 {
 	const DMRaid_Member& memb = get_cache_entry_by_member(member_path);
 	if (memb.member.m_name.length() > 0)
@@ -538,6 +537,15 @@ bool DMRaid::is_member_active(const Glib::ustring& member_path)
 	return false;
 }
 
+// Return whether the named device (e.g. "/dev/sdc") is a member of an *active* DMRaid
+// array or not.
+// As the cache only records members of active DMRaid arrays:
+//     is_member_active(x) == is_member(x)
+bool DMRaid::is_member_active(const Glib::ustring& member_path)
+{
+	return is_member(member_path);
+}
+
 
 // Return array device containing the specified member, or "" if the array is not running
 // or there is no such member.
diff --git a/src/GParted_Core.cc b/src/GParted_Core.cc
index 0d0aa4b9..8b7ed39e 100644
--- a/src/GParted_Core.cc
+++ b/src/GParted_Core.cc
@@ -1193,19 +1193,22 @@ FSType GParted_Core::detect_filesystem( PedDevice * lp_device, PedPartition * lp
 {
 	Glib::ustring fsname = "";
 	Glib::ustring path;
+	DMRaid dmraid;
 
 	if ( lp_partition )
-		// Will query partition using methods: (Q1) SWRaid, (Q2) blkid,
+		// Will query partition using methods: (Q1) RAID, (Q2) blkid,
 		// (Q3) libparted, (Q4) internal
 		path = get_partition_path( lp_partition );
 	else
-		// Will query whole disk device using methods: (Q1) SWRaid, (Q2) blkid,
+		// Will query whole disk device using methods: (Q1) RAID, (Q2) blkid,
 		// (Q4) internal
 		path = lp_device->path;
 
-	// (Q1) SWRaid_Info (mdadm) member detection.
+	// (Q1) SWRaid_Info (mdadm) and DMRaid member detection.
 	if ( SWRaid_Info::is_member( path ) )
 		return SWRaid_Info::get_fstype(path);
+	if (dmraid.is_member(path))
+		return FS_ATARAID;
 
 	// (Q2) FS_Info (blkid) file system detection
 	// Blkid detects more signatures and generally has less limitations so use before