This has always been a problem with RECEIVE, and is related to the way
in which RECEIVE works.  It ALWAYS receives the file to your "A" disk and
then copies it to the disk where you requested it be received.
 
It is also a problem if the file will fit on the "X" disk, but won't
fit on your "A" disk.
 
It's BAD (Broken as Designed).
 
Harold