A few days ago, I used PQMagic for partition processing. During the process, a large amount of data movement operations were needed. I couldn't wait and pressed Ctrl+Alt+del. Then the hard drive couldn't be accessed and couldn't be partitioned. It憋了 me the whole day. Later, I finally found Debug.exe and followed the instructions on the Internet to operate. I copied others' steps and finally destroyed the partition table. Then I used Fdisk and recovered the data with a data recovery software under Windows. Many years ago, I once used the partition table recovery function of KV300 to restore the backup partition table file of garbage data to the faulty disk to solve the problem that the hard drive couldn't be partitioned. It's a pity that later these programs of mine were lost, which made me use debug. With the building owner's this KV, it will be much more convenient for many people. Thanks to the building owner for sharing.