diff --git a/IRaCIS.Core.API/_PipelineExtensions/IRacisHostFile/MultiDiskStaticFilesMiddleware.cs b/IRaCIS.Core.API/_PipelineExtensions/IRacisHostFile/MultiDiskStaticFilesMiddleware.cs
index e5c4ee39d..053b8d48d 100644
--- a/IRaCIS.Core.API/_PipelineExtensions/IRacisHostFile/MultiDiskStaticFilesMiddleware.cs
+++ b/IRaCIS.Core.API/_PipelineExtensions/IRacisHostFile/MultiDiskStaticFilesMiddleware.cs
@@ -49,20 +49,21 @@ namespace IRaCIS.Core.API
 
             var isDicomFile = path.Contains($"{StaticData.Folder.DicomFolder}");
 
-            var defaultFileProvider = new PhysicalFileProvider(FileStoreHelper.GetIRaCISRootPath(_hostingEnv));
-            var staticFileOptions = new StaticFileOptions
-            {
-                FileProvider = defaultFileProvider,
-                RequestPath = $"/{StaticData.Folder.IRaCISDataFolder}",
-                ServeUnknownFileTypes = true,
-                DefaultContentType = "application/octet-stream"
-            };
 
-            var defaultRoot = Path.GetPathRoot(iRaCISDefaultDataFolder);
 
             //先从默认里面去找
             if (isIRacisFile)
             {
+                var defaultFileProvider = new PhysicalFileProvider(FileStoreHelper.GetIRaCISRootPath(_hostingEnv));
+
+                var staticFileOptions = new StaticFileOptions
+                {
+                    FileProvider = defaultFileProvider,
+                    RequestPath = $"/{StaticData.Folder.IRaCISDataFolder}",
+                    ServeUnknownFileTypes = true,
+                    DefaultContentType = "application/octet-stream"
+                };
+
                 if (defaultFileProvider.GetFileInfo(context.Request.Path).Exists)
                 {
 
@@ -78,7 +79,14 @@ namespace IRaCIS.Core.API
             //dicom影像，从多个文件夹尝试，因为会存在切换磁盘
             if (isDicomFile)
             {
-                var disks = GetDisks().Where(t=>!t.Contains(defaultRoot));
+                var defaultRoot = Path.GetPathRoot(iRaCISDefaultDataFolder);
+
+                //除默认部署路径的其他路径
+                var disks = DriveInfo.GetDrives()
+                .Where(d => d.IsReady && d.DriveType == DriveType.Fixed)/*.Where(t => !t.Name.Contains("C") && !t.Name.Contains("c"))*/
+                .OrderBy(d => d.AvailableFreeSpace)
+                .Select(d => d.RootDirectory.FullName)
+                .ToArray().Where(t=>!t.Contains(defaultRoot));
 
 
                 foreach (var item in disks)
@@ -92,13 +100,7 @@ namespace IRaCIS.Core.API
                  
                     var otherFileProvider= new PhysicalFileProvider(otherFileStoreFolder);
 
-                    var otherStaticFileOptions = new StaticFileOptions
-                    {
-                        FileProvider = otherFileProvider,
-                        RequestPath = $"/{StaticData.Folder.IRaCISDataFolder}",
-                        ServeUnknownFileTypes = true,
-                        DefaultContentType = "application/octet-stream"
-                    };
+                  
 
                     if (otherFileProvider.GetFileInfo(context.Request.Path).Exists)
                     {
@@ -108,9 +110,20 @@ namespace IRaCIS.Core.API
                         //方式一
                         await context.Response.SendFileAsync( new PhysicalFileInfo(new FileInfo(actrualPath)));
 
-                        //方式二
+                        #region 方式二  报错  otherFileProvider 应该还包含/{StaticData.Folder.IRaCISDataFolder} 这一层级
+                        //var otherStaticFileOptions = new StaticFileOptions
+                        //{
+                        //    FileProvider = otherFileProvider,
+                        //    RequestPath = $"/{StaticData.Folder.IRaCISDataFolder}",
+                        //    ServeUnknownFileTypes = true,
+                        //    DefaultContentType = "application/octet-stream"
+                        //};
                         //var staticFileMiddleware = new StaticFileMiddleware(_next, _hostingEnv, Options.Create(otherStaticFileOptions), _loggerFactory);
                         //await staticFileMiddleware.Invoke(context);
+                        #endregion
+
+
+
                         return;
                     }
                 }
@@ -123,14 +136,7 @@ namespace IRaCIS.Core.API
 
 
 
-        private string[] GetDisks()
-        {
-            // 获取系统中所有可用的磁盘
-            return DriveInfo.GetDrives()
-                .Where(d => d.IsReady && d.DriveType == DriveType.Fixed).Where(t => !t.Name.Contains("C") && !t.Name.Contains("c"))
-                .Select(d => d.RootDirectory.FullName)
-                .ToArray();
-        }
+
 
 
         //private static string GetContentType(string path)