Wiping a disk partition

I have this:
```
root@gw:/home/wash # df -h
Filesystem     Size    Used   Avail Capacity  Mounted on
/dev/ada0p2    1.8T    552G    1.1T    33%    /
devfs          1.0K      0B    1.0K     0%    /dev
fdescfs        1.0K      0B    1.0K     0%    /dev/fd
procfs         8.0K      0B    8.0K     0%    /proc
linprocfs      8.0K      0B    8.0K     0%    /compat/linux/proc
linsysfs       8.0K      0B    8.0K     0%    /compat/linux/sys
/dev/ada1p2    1.8T    856G    802G    52%    /disk2
```

What is the fastest way to wipe all data on /dev/ada1p2?


-- 
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Odhiambo WASHINGTON,
Nairobi,KE
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