Error message Parallels transport

Hi, I'm receiving this error when I try to migrate my PC to external hard drive. Can you please help? I've restarted everything, reinstalled Parallels Transport, restarted several times, disconnected my hard drive. Still getting the message. I try to migrate the whole computer, I've tried just migrating the Windows and programs. And the error comes up for both.

Thanks!

 

Have you run chkdsk? It looks like a disk error on your Windows hard disk.

 

Hi, we've received your reply: what is chkdsk ? Could you please tell me how to run it? Hope it works
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