diff --git a/internal/core/src/index/VectorDiskIndex.cpp b/internal/core/src/index/VectorDiskIndex.cpp
index 9f3cfabe37..339bef33e7 100644
--- a/internal/core/src/index/VectorDiskIndex.cpp
+++ b/internal/core/src/index/VectorDiskIndex.cpp
@@ -227,8 +227,8 @@ VectorDiskAnnIndex<T>::Build(const Config& config) {
         ThrowInfo(ErrorCode::IndexBuildError,
                   "failed to build disk index, " + KnowhereStatusString(stat));
 
-    local_chunk_manager->RemoveDir(
-        storage::GetSegmentRawDataPathPrefix(local_chunk_manager, segment_id));
+    local_chunk_manager->RemoveDir(storage::GenFieldRawDataPathPrefix(
+        local_chunk_manager, segment_id, field_id));
 }
 
 template <typename T>
@@ -335,8 +335,8 @@ VectorDiskAnnIndex<T>::BuildWithDataset(const DatasetPtr& dataset,
         file_manager_->AddFile(valid_data_path);
     }
 
-    local_chunk_manager->RemoveDir(
-        storage::GetSegmentRawDataPathPrefix(local_chunk_manager, segment_id));
+    local_chunk_manager->RemoveDir(storage::GenFieldRawDataPathPrefix(
+        local_chunk_manager, segment_id, field_id));
 
     // TODO ::
     // SetDim(index_->Dim());
diff --git a/internal/core/src/storage/Util.cpp b/internal/core/src/storage/Util.cpp
index 8d83e36df3..785516d7af 100644
--- a/internal/core/src/storage/Util.cpp
+++ b/internal/core/src/storage/Util.cpp
@@ -942,15 +942,7 @@ GenFieldRawDataPathPrefix(ChunkManagerPtr cm,
     boost::filesystem::path prefix = cm->GetRootPath();
     boost::filesystem::path path = std::string(RAWDATA_ROOT_PATH);
     boost::filesystem::path path1 =
-        std::to_string(segment_id) + "/" + std::to_string(field_id) + "/";
-    return NormalizePath(prefix / path / path1);
-}
-
-std::string
-GetSegmentRawDataPathPrefix(ChunkManagerPtr cm, int64_t segment_id) {
-    boost::filesystem::path prefix = cm->GetRootPath();
-    boost::filesystem::path path = std::string(RAWDATA_ROOT_PATH);
-    boost::filesystem::path path1 = std::to_string(segment_id);
+        std::to_string(segment_id) + "_" + std::to_string(field_id) + "/";
     return NormalizePath(prefix / path / path1);
 }