diff --git a/src/fs/Kconfig b/src/fs/Kconfig
index 1524e4c9e530e3f89e5afb71716d08ea76a08220..fc6ef9e0f0f81d58c1d48b1a98320315baf3871e 100644
--- a/src/fs/Kconfig
+++ b/src/fs/Kconfig
@@ -5,13 +5,13 @@ source "$NXOS_SRC_DIR/fs/fat/Kconfig"
 config NX_ENABLE_EXECUTE_USER
     bool "Enable execute first user process"
     select NX_ENABLE_MOUNT_TABLE
-    default n
+    default y
 
     if NX_ENABLE_EXECUTE_USER
     
         config NX_FIRST_USER_PATH
             string "first user process file path"
-            default "/uinit"
+            default "/System/Service/UserLand.xapp"
 
     endif
 
@@ -35,7 +35,7 @@ config NX_ENABLE_MOUNT_TABLE
         if NX_FS_DEVFS
             config NX_DEVFS_PATH_DEFAULT
                 string "default devfs mount path"
-                default "/dev"
+                default "/System/Device"
 
             config NX_DEVFS_FSNAME_DEFAULT
                 string "default devfs fsname"
diff --git a/src/fs/cpio/Kconfig b/src/fs/cpio/Kconfig
index 9f1d6b0181f2b1ee5ba3f205ba83c5c226ad2208..46ba91dc6a0d50df624e91e9a77d3555fb66b03b 100644
--- a/src/fs/cpio/Kconfig
+++ b/src/fs/cpio/Kconfig
@@ -1,4 +1,3 @@
 config NX_FS_CPIO
     bool "Enable cpio file system"
-    select NX_DRIVER_ROMDISK
     default n
diff --git a/src/init/init.c b/src/init/init.c
index 75ee5d4e74406a2e368c5d9378edb7eec935f49a..a7647c40df8a914d52396ca84a9d78fbf07ba4de 100644
--- a/src/init/init.c
+++ b/src/init/init.c
@@ -78,7 +78,11 @@ NX_PRIVATE void CallsEntry(void *arg)
 #ifdef CONFIG_NX_ENABLE_EXECUTE_USER
     {
         NX_Error err = NX_ProcessLaunch(CONFIG_NX_FIRST_USER_PATH, NX_PROC_FLAG_NOWAIT, NX_NULL, NX_NULL, NX_NULL);
-        NX_LOG_I("execute first user on path:%s with state %d", CONFIG_NX_FIRST_USER_PATH, err);        
+        NX_LOG_I("execute first user on path:%s with state %s", CONFIG_NX_FIRST_USER_PATH, NX_ErrorToString(err));        
+        if (err != NX_EOK)
+        {
+            NX_PANIC("start user process failed!");
+        }
     }
 #endif /* CONFIG_NX_ENABLE_EXECUTE_USER */
 
diff --git a/src/kernel/debug.c b/src/kernel/debug.c
index 04a3ddfacd142ef0efd14c7c8126f78970fdd4c3..dfe3b08934563421ec1c83a45afc5c31898ca259 100644
--- a/src/kernel/debug.c
+++ b/src/kernel/debug.c
@@ -25,7 +25,7 @@ void NX_DebugAssertionFailure(char *exp, char *file, char *baseFile, int line)
 
 void NX_DebugSpin(const char *str)
 {
-    NX_LOG_I(str, NX_Endln "FILE:%s\nFUNCTION:%s\nLINE:%d", __FILE__, __FUNCTION__, __LINE__);
+    NX_LOG_E(str, NX_Endln "FILE:%s\nFUNCTION:%s\nLINE:%d", __FILE__, __FUNCTION__, __LINE__);
     while (1);
 }
 
diff --git a/src/platform/d1 b/src/platform/d1
index debbfef0dde94f29e15e4eb7fb57f8cc8d62e862..0149e64e29ec48b0f986848a91ec8e5cdf92240b 160000
--- a/src/platform/d1
+++ b/src/platform/d1
@@ -1 +1 @@
-Subproject commit debbfef0dde94f29e15e4eb7fb57f8cc8d62e862
+Subproject commit 0149e64e29ec48b0f986848a91ec8e5cdf92240b
diff --git a/src/platform/hifive_unmached b/src/platform/hifive_unmached
index 8217e275f5825c0b36e631c4f6aaa0b33fcbcbfb..1132ace3f9d223c038d8fc7d417698ae48cd9dea 160000
--- a/src/platform/hifive_unmached
+++ b/src/platform/hifive_unmached
@@ -1 +1 @@
-Subproject commit 8217e275f5825c0b36e631c4f6aaa0b33fcbcbfb
+Subproject commit 1132ace3f9d223c038d8fc7d417698ae48cd9dea
diff --git a/src/platform/i386 b/src/platform/i386
index 15b33f830b67fae26c43a9e4b3af2ad410840a0d..f3cd8bb3b9d3f10571fad771ad39181f9daed899 160000
--- a/src/platform/i386
+++ b/src/platform/i386
@@ -1 +1 @@
-Subproject commit 15b33f830b67fae26c43a9e4b3af2ad410840a0d
+Subproject commit f3cd8bb3b9d3f10571fad771ad39181f9daed899
diff --git a/src/platform/k210 b/src/platform/k210
index a02b1237e93ff7de32c38e9f5ef78fb64b29359d..8256c65a189c4c4742f5e3de8d9f2600c9956328 160000
--- a/src/platform/k210
+++ b/src/platform/k210
@@ -1 +1 @@
-Subproject commit a02b1237e93ff7de32c38e9f5ef78fb64b29359d
+Subproject commit 8256c65a189c4c4742f5e3de8d9f2600c9956328
diff --git a/src/platform/qemu_riscv64 b/src/platform/qemu_riscv64
index 5c63c2f212a425caeeeac7e73f645376cdb83cf4..60dd151d5066b5930f3cadc61cbcd542e6180272 160000
--- a/src/platform/qemu_riscv64
+++ b/src/platform/qemu_riscv64
@@ -1 +1 @@
-Subproject commit 5c63c2f212a425caeeeac7e73f645376cdb83cf4
+Subproject commit 60dd151d5066b5930f3cadc61cbcd542e6180272
diff --git a/src/process/syscall.c b/src/process/syscall.c
index 4deab1b5342bc7b08a670882a5815aed009f4f12..7cb91d67539f7752315b8956c79b911e7e7abd0f 100644
--- a/src/process/syscall.c
+++ b/src/process/syscall.c
@@ -84,7 +84,7 @@ NX_PRIVATE NX_Error SysFileSystemSync(void)
     return NX_FileSystemSync();
 }
 
-NX_PRIVATE NX_Error SoltToFile(NX_Solt solt, int * fd)
+NX_PRIVATE NX_Error SoltToFile(NX_Solt solt, NX_SSize * fd)
 {
     NX_Process * process;
     NX_ExposedObject * exobj;
@@ -105,7 +105,7 @@ NX_PRIVATE NX_Error SoltToFile(NX_Solt solt, int * fd)
         return NX_ENORES;
     }
 
-    *fd = (int)exobj->object;
+    *fd = (NX_SSize)exobj->object;
     NX_ASSERT(*fd);
 
     return NX_EOK;
@@ -113,14 +113,14 @@ NX_PRIVATE NX_Error SoltToFile(NX_Solt solt, int * fd)
 
 NX_PRIVATE NX_Error FileCloseSolt(void * object, NX_ExposedObjectType type)
 {
-    int fd;
+    NX_SSize fd;
 
     if (type != NX_EXOBJ_FILE)
     {
         return NX_ENORES;
     }
 
-    fd = (int) object;
+    fd = (NX_SSize)object;
     NX_ASSERT(fd);
 
     return NX_FileClose(fd);
@@ -128,7 +128,7 @@ NX_PRIVATE NX_Error FileCloseSolt(void * object, NX_ExposedObjectType type)
 
 NX_PRIVATE NX_Error SysFileOpen(const char * path, NX_U32 flags, NX_U32 mode, NX_Solt * outSolt)
 {
-    int fd;
+    NX_SSize fd;
     NX_Error err = NX_EOK;
     NX_Solt solt = NX_SOLT_INVALID_VALUE;
     NX_Process * process;
@@ -144,7 +144,7 @@ NX_PRIVATE NX_Error SysFileOpen(const char * path, NX_U32 flags, NX_U32 mode, NX
     }
 
     process = NX_ProcessCurrent();
-    if ((err = NX_ProcessInstallSolt(process, (void *)fd, NX_EXOBJ_FILE, FileCloseSolt, &solt)) != NX_EOK)
+    if ((err = NX_ProcessInstallSolt(process, (NX_SSize *)fd, NX_EXOBJ_FILE, FileCloseSolt, &solt)) != NX_EOK)
     {
         NX_FileClose(fd);
         return err;
@@ -159,7 +159,7 @@ NX_PRIVATE NX_Error SysFileRead(NX_Solt solt, void * buf, NX_Size len, NX_Size *
 {
     NX_Error err;
     NX_Size size;
-    int fd = -1;
+    NX_SSize fd = -1;
     
     err = SoltToFile(solt, &fd);
     if (err != NX_EOK)
@@ -182,7 +182,7 @@ NX_PRIVATE NX_Error SysFileWrite(NX_Solt solt, void * buf, NX_Size len, NX_Size
 {
     NX_Error err;
     NX_Size size;
-    int fd = -1;
+    NX_SSize fd = -1;
     
     err = SoltToFile(solt, &fd);
     if (err != NX_EOK)
@@ -204,7 +204,7 @@ NX_PRIVATE NX_Error SysFileWrite(NX_Solt solt, void * buf, NX_Size len, NX_Size
 NX_Error SysFileIoctl(NX_Solt solt, NX_U32 cmd, void *arg)
 {
     NX_Error err;
-    int fd = -1;
+    NX_SSize fd = -1;
     
     err = SoltToFile(solt, &fd);
     if (err != NX_EOK)
@@ -218,7 +218,7 @@ NX_Error SysFileIoctl(NX_Solt solt, NX_U32 cmd, void *arg)
 NX_PRIVATE NX_Offset SysFileSetPointer(NX_Solt solt, NX_Offset off, int whence, NX_Error *outErr)
 {
     NX_Error err;
-    int fd = -1;
+    NX_SSize fd = -1;
     
     err = SoltToFile(solt, &fd);
     if (err != NX_EOK)
@@ -232,7 +232,7 @@ NX_PRIVATE NX_Offset SysFileSetPointer(NX_Solt solt, NX_Offset off, int whence,
 NX_PRIVATE NX_Error SysFileSync(NX_Solt solt)
 {
     NX_Error err;
-    int fd = -1;
+    NX_SSize fd = -1;
     
     err = SoltToFile(solt, &fd);
     if (err != NX_EOK)
@@ -246,7 +246,7 @@ NX_PRIVATE NX_Error SysFileSync(NX_Solt solt)
 NX_PRIVATE NX_Error SysFileSetMode(NX_Solt solt, NX_U32 mode)
 {
     NX_Error err;
-    int fd = -1;
+    NX_SSize fd = -1;
     
     err = SoltToFile(solt, &fd);
     if (err != NX_EOK)
@@ -260,7 +260,7 @@ NX_PRIVATE NX_Error SysFileSetMode(NX_Solt solt, NX_U32 mode)
 NX_PRIVATE NX_Error SysFileGetStat(NX_Solt solt, NX_FileStatInfo * st)
 {
     NX_Error err;
-    int fd = -1;
+    NX_SSize fd = -1;
     
     err = SoltToFile(solt, &fd);
     if (err != NX_EOK)
@@ -271,7 +271,7 @@ NX_PRIVATE NX_Error SysFileGetStat(NX_Solt solt, NX_FileStatInfo * st)
     return NX_FileGetStat(fd, st);
 }
 
-NX_PRIVATE NX_Error SoltToDir(NX_Solt solt, int * fd)
+NX_PRIVATE NX_Error SoltToDir(NX_Solt solt, NX_SSize * fd)
 {
     NX_Process * process;
     NX_ExposedObject * exobj;
@@ -292,7 +292,7 @@ NX_PRIVATE NX_Error SoltToDir(NX_Solt solt, int * fd)
         return NX_ENORES;
     }
 
-    *fd = (int)exobj->object;
+    *fd = (NX_SSize)exobj->object;
     NX_ASSERT(*fd);
 
     return NX_EOK;
@@ -300,14 +300,14 @@ NX_PRIVATE NX_Error SoltToDir(NX_Solt solt, int * fd)
 
 NX_PRIVATE NX_Error DirCloseSolt(void * object, NX_ExposedObjectType type)
 {
-    int fd;
+    NX_SSize fd;
 
     if (type != NX_EXOBJ_DIR)
     {
         return NX_ENORES;
     }
 
-    fd = (int) object;
+    fd = (NX_SSize) object;
     NX_ASSERT(fd);
 
     return NX_DirClose(fd);
@@ -315,7 +315,7 @@ NX_PRIVATE NX_Error DirCloseSolt(void * object, NX_ExposedObjectType type)
 
 NX_PRIVATE NX_Error SysDirOpen(const char * path, NX_Solt * outSolt)
 {
-    int fd;
+    NX_SSize fd;
     NX_Error err = NX_EOK;
     NX_Solt solt = NX_SOLT_INVALID_VALUE;
     NX_Process * process;
@@ -345,7 +345,7 @@ NX_PRIVATE NX_Error SysDirOpen(const char * path, NX_Solt * outSolt)
 NX_PRIVATE NX_Error SysDirRead(NX_Solt solt, NX_Dirent * dir)
 {
     NX_Error err;
-    int fd = -1;
+    NX_SSize fd = -1;
     
     err = SoltToDir(solt, &fd);
     if (err != NX_EOK)
@@ -359,7 +359,7 @@ NX_PRIVATE NX_Error SysDirRead(NX_Solt solt, NX_Dirent * dir)
 NX_PRIVATE NX_Error SysDirResetPointer(NX_Solt solt)
 {
     NX_Error err;
-    int fd = -1;
+    NX_SSize fd = -1;
     
     err = SoltToDir(solt, &fd);
     if (err != NX_EOK)