> Thanks for your follow.
> 
> > > I assign only 65536 blocks, but 'df' says 504952 blocks.
> >
> > Where did you only asign 65536 blocks?
> 
> With 'APS', which is a hard-disk utility, I made some partition on
> my hard-disk;  I assign 32KByte to 'sd0a'.  32KByte is consisted in
> 65536 512byte blocks.

What does diskalbel say?

The only two things I can think of are that either the disklabel is
messed up, and the partition you wanted to be sd0a isn't, or that
df is really, really sick.

How many partitions do you have in use?

Take care,

Bill