Win 2000 back to Win 98se,

I am trying to take a pentium II, 350 mhz, 3gb hd From win 2000 back to win 98se, formatted back to fat 32 but on trying to set up 98. Error “scandisk encountered a data error while reading the fat 32 entry for cluster 319248. This error prevents scandisk from fixing this drive.”

Any Idea’s ?