Unlike logical errors related to file system formatting (such as "Raw partition" errors), Error Code 40 usually suggests a communication breakdown between the software, the operating system, and the physical storage medium. When the program tries to move a partition, extend a volume, or perform a surface test, and it hits a bad sector or a driver conflict, it returns this specific code.
If CHKDSK fails, check the drive’s self-monitoring data. minitool partition wizard error code 40
Before blaming the hardware, let Windows attempt to repair logical file system corruption. Unlike logical errors related to file system formatting
If you are managing an external hard drive, a loose USB cable, a faulty port, or an insufficient power supply can interrupt the data stream, triggering an I/O error. Before blaming the hardware, let Windows attempt to
Ironically, you can use MiniTool Partition Wizard itself to diagnose the drive before trying to modify it.