How does grub4dos judge whether there is a worry-free forum in a folder?

Use the ifexist command to determine. In grub4dos, you can use the ifexist command to determine whether a file or folder exists. If the file or folder exists, the command returns 0, otherwise it returns 1. When judging folders, it is recommended to provide a complete folder path, and use forward slashes instead of backslashes in the path to avoid grammatical errors.