Zhongmao virus, don't talk nonsense if you don't understand it. This is because your partition was unexpectedly interrupted, resulting in the partition table being damaged or lost. All the files in your hard disk are there because you didn't write the data to the hard disk. Although you can't see the partition, the file is still there. Some files can be recovered by data recovery software, but it is impossible to recover 100% unless you go to a professional data recovery place, but the cost is more expensive.