I lost ten percent of my disk space in the freebsd file system, why?

[Liu Haixiao]

Ladies and gentlemen:
Please look at this:
%df
Filesystem  1K-blocks    Used    Avail Capacity 
Mounted on
/dev/ad0s1a    253678   36588   196796    16%    /
devfs               1       1        0   100%    /dev
/dev/ad0s2e  20154808 5938198 12604226    32%   
/mnt/s2
/dev/ad0s3e  18803906       2 17299592     0%   
/mnt/s3
/dev/ad0s1e    253678      12   233372     0%    /tmp
/dev/ad0s1f  18836160 1590006 15739262     9%    /usr
/dev/ad0s1d    253678   10446   222938     4%    /var
%

Used + Avail = 0.92 * 1K-blocks 
why?
Many thanks.



		
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