Trouble caused by Partition Magic

I am Copying a partition from disc A to another disc B. 

PM said that it would do the task in two ways: copying some data in disc B to another position in disc B; copying data from disc A to disc B.

At the time in the first step, the link between my computer and disc B was cut off mistakenly and the disc B's partition is shown as PqRP.

I am trying to recover it by use PQEDIT32 to change the type of partition from PqRP to NTFS. But the windows says 'Some settings are wrong' and I can not reach anything in that disc.

How can I get my data in disc B back? PLEASE HELP ME!