[CentOS] Checking badblocks using KS

Hi All,
   Is there a way to check the harddisk health before CentOS installation.?

One way I used to do was by using --badblocks check in ks.cfg file while
using RH 7.2.

    This is not working (atleast not with the same syntax as in RH 7.2) in
CentOS.
    Is there an alternate (correct) syntax or is there a new (better) way
to check harddisk health before CentOS installation?


--Regards
S.Balaji