I created this small partition of 512K bytes on disk, I am noticing about 
24% is used up before system can be mounted and used. My assumption was about 
4% is supposed to be used if minfree is set to 0.

    #newfs -U -l -m 0 -n -o space /dev/ad1d
    /dev/ad1d: 0.5MB (1024 sectors) block size 16384, fragment size 2048 using 
1 cylinder groups of 0.50MB, 32 blks, 64 inodes with soft updates
    super-block backups (for fsck -b #) at:
    #mount /dev/ad1d /test
    #df -H /test
    Filesystem    Size    Used  Avail Capacity  Mounted on
    /dev/ad1d      391k    2.0k    389k    1%    /test
    Could someone explain where the 512-391=121K of disk space went to? What is 
the relation between this used of space and total paritition size or is it some 
fixed ratio?
    Thanks & Regards
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