wbfs manager

[realg123]

Hey guys quick question.
A friend of mine has a 1tb hdd filled with wii games.
He asked the person who he purchased the hard drive from if he could copy the games over to another 1tb hdd.
The guy replies its not a good idea because the hard drive might get corrupt and therefore he would have to redowonload the games and add them in manualy 1 by 1.

Is this true? I plan to use wbfs manager and use the drive - to drive option