diff --git a/GRUB2/MOD_SRC/grub-2.04/grub-core/ventoy/ventoy_cmd.c b/GRUB2/MOD_SRC/grub-2.04/grub-core/ventoy/ventoy_cmd.c
index 4cad3ca2..1911d916 100644
--- a/GRUB2/MOD_SRC/grub-2.04/grub-core/ventoy/ventoy_cmd.c
+++ b/GRUB2/MOD_SRC/grub-2.04/grub-core/ventoy/ventoy_cmd.c
@@ -896,6 +896,36 @@ static grub_err_t ventoy_cmd_strstr(grub_extcmd_context_t ctxt, int argc, char *
     return (grub_strstr(args[0], args[1])) ? 0 : 1;
 }
 
+static grub_err_t ventoy_cmd_istrstr(grub_extcmd_context_t ctxt, int argc, char **args)
+{
+    grub_err_t ret = 1;
+    char *s1 = NULL;
+    char *s2 = NULL;
+
+    (void)ctxt;
+
+    if (argc != 2)
+    {
+        return 1;
+    }
+
+    s1 = grub_strdup(args[0]);
+    s2 = grub_strdup(args[1]);
+    if (s1 == NULL || s2 == NULL)
+    {
+        goto end;
+    }
+
+    ventoy_str_toupper(s1);
+    ventoy_str_toupper(s2);
+    ret = (grub_strstr(s1, s2)) ? 0 : 1;
+
+end:
+    grub_check_free(s1);
+    grub_check_free(s2);
+    return ret;
+}
+
 static grub_err_t ventoy_cmd_strbegin(grub_extcmd_context_t ctxt, int argc, char **args)
 {
     char *c0, *c1;
@@ -6944,6 +6974,7 @@ static cmd_para ventoy_cmds[] =
     { "vt_incr",  ventoy_cmd_incr,  0, NULL, "{Var} {INT}",   "Increase integer variable",    NULL },
     { "vt_mod",  ventoy_cmd_mod,  0, NULL, "{Int} {Int} {Var}",   "mod integer variable",    NULL },
     { "vt_strstr",  ventoy_cmd_strstr,  0, NULL, "",   "",    NULL },
+    { "vt_istrstr",  ventoy_cmd_istrstr,  0, NULL, "",   "",    NULL },
     { "vt_str_begin",  ventoy_cmd_strbegin,  0, NULL, "",   "",    NULL },
     { "vt_str_casebegin",  ventoy_cmd_strcasebegin,  0, NULL, "",   "",    NULL },
     { "vt_debug", ventoy_cmd_debug, 0, NULL, "{on|off}",   "turn debug on/off",    NULL },
diff --git a/INSTALL/grub/grub.cfg b/INSTALL/grub/grub.cfg
index 04392163..d66ccafa 100644
--- a/INSTALL/grub/grub.cfg
+++ b/INSTALL/grub/grub.cfg
@@ -1457,7 +1457,10 @@ function ventoy_iso_busybox_ver {
             set ventoy_busybox_ver=64
         elif vt_strstr "$vt_volume_id" "x86_64"; then
             set ventoy_busybox_ver=64
-
+        elif vt_istrstr "${vt_chosen_path}" "x86_64"; then
+            set ventoy_busybox_ver=64
+        elif vt_istrstr "${vt_chosen_path}" "amd64"; then
+            set ventoy_busybox_ver=64
         fi
     fi
 }