Fix a bug when booting linux vdisk (.vtoy) file by F2 browser mode or by...

Fix a bug when booting linux vdisk (.vtoy) file by F2 browser mode or by ventoy_grub.cfg in Legacy BIOS mode.

IPXE/ipxe_mod_code/ipxe-3fe683e/src/arch/x86/interface/pcbios/ventoy_int13.c

@@ -1442,10 +1442,17 @@ unsigned int ventoy_int13_hook (ventoy_chain_head *chain)
     }
 
     if (chain->os_param.vtoy_reserved[6])
+    {
+        if (g_hddmode)
+        {
+            /* drive map no need for linux vtoy/img boot */
+        }
+        else
         {
             g_drive_map1 = 0x80; 
             g_drive_map2 = 0x81;
         }
+    }
     else if (chain->disk_drive >= 0x80 && chain->drive_map >= 0x80)
     {
         g_drive_map1 = chain->disk_drive;