+cp -a VTOY VTOY_TMP
+
+ls -la
+if ! [ -d ISO_TMP ]; then
+ echo "Copy ISO_TMP failed"
+ exit 1
+fi
+
+if ! [ -d VTOY_TMP ]; then
+ echo "Copy VTOY_TMP failed"
+ exit 1
+fi
+
+mkdir -p ISO_TMP/EFI/ventoy
+cd VTOY_TMP
+
+gcc -O2 ./ventoy/disksize.c -o ./ventoy/disksize
+