add debug info

IMG/cpio/ventoy/hook/ventoy-hook-lib.sh

@@ -83,6 +83,7 @@ get_ventoy_iso_name() {
 }
 
 wait_for_usb_disk_ready() {
+    vtloop=0
     while [ -n "Y" ]; do
         usb_disk=$(get_ventoy_disk_name)
         vtlog "wait_for_usb_disk_ready $usb_disk ..."
@@ -97,11 +98,18 @@ wait_for_usb_disk_ready() {
             vtlog "wait_for_usb_disk_ready $usb_disk finish"
             break
         else
+            let vtloop=vtloop+1
+            if [ $vtloop -gt 2 ]; then
+                if [ "$VTLOG" != "$VTOY_PATH/log" ]; then
+                    $VTOY_PATH/tool/vtoydump -f /ventoy/ventoy_os_param -v > $VTLOG
+                fi
+            fi
             $SLEEP 0.3
         fi
     done
 }
 
+
 check_usb_disk_ready() {
     if echo $1 | $EGREP -q "nvme|mmc|nbd"; then
         vtpart2=${1}p2