Gabriel Smith :
USAFRet :
This depends.
Do you want to reuse them? 80GB HDD's...why?
If not, contact a local shredding company, and turn them into hard drive dust.
We definitely want to keep the HDDs in working condition.
from
http://www.tomshardware.com/answers/id-1747690/format-multiple-drives.html
to delete the partitions: not automatic, but all I can think of. pull the drives out of 22 computers, and hook them into the rest, that system has 4 sata slots, use em all. 4 drives per system. start windows installation, use the installer to remove the partitions from each drive, after operation shut down, replace the drives and re-install windows to each.
short of buying a multiple drive format device like this onehttp://www.ics-iq.com/Image-MASSter-WipePRO-Hard-Drive-Data-Eraser-p/f.gr-4204.htm
this is all I got. hope helpful