Set hidden attribute for VTOYEFI part in GPT partition style

LinuxGUI/Ventoy2Disk/Core/ventoy_util.c

@@ -412,7 +412,7 @@ int ventoy_fill_gpt(uint64_t size, uint64_t reserve, int align4k, VTOY_GPT_INFO
     ventoy_gen_preudo_uuid(&(Table[1].PartGuid));
     Table[1].StartLBA = Table[0].LastLBA + 1;
     Table[1].LastLBA = Table[1].StartLBA + VTOYEFI_PART_BYTES / 512 - 1;
-    Table[1].Attr = 0x8000000000000001ULL;
+    Table[1].Attr = 0xC000000000000001ULL;
     ventoy_fill_gpt_partname(Table[1].Name, "VTOYEFI");
 
 #if 0

Ventoy2Disk/Ventoy2Disk/Utility.c

@@ -659,7 +659,7 @@ int VentoyFillGpt(UINT64 DiskSizeBytes, VTOY_GPT_INFO *pInfo)
     CoCreateGuid(&(Table[1].PartGuid));
     Table[1].StartLBA = Table[0].LastLBA + 1;
     Table[1].LastLBA = Table[1].StartLBA + VENTOY_EFI_PART_SIZE / 512 - 1;
-    Table[1].Attr = 0x8000000000000001ULL;
+    Table[1].Attr = 0xC000000000000001ULL;
     memcpy(Table[1].Name, L"VTOYEFI", 7 * 2);
 
 #if 0

vtoygpt/vtoygpt.c

@@ -244,7 +244,7 @@ int DumpGptInfo(VTOY_GPT_INFO *pGptInfo)
     return 0;
 }
 
-#define VENTOY_EFI_PART_ATTR   0x8000000000000001ULL
+#define VENTOY_EFI_PART_ATTR   0xC000000000000001ULL
 
 int main(int argc, const char **argv)
 {