Wiping Multiple Drives with gdisk32?

Hi there

 

I am an IT technician and am using gdisk32 booted off a CD or a USB to wipe hard drives before they leave the company.

Currently I can put multiple drives in the machines I'm using (I do not have any good HDDs in the machines - only drives to be wiped) and wipe one at a time.  When one drive finishes wiping it waits for my input to wipe the next drive.

 

My question is, can I wipe drives 1, 2, and 3 automatically via some switch?  I have looked through the documentation and done gdisk32 /? and haven't seen anything useful.  If there is a command I could put in a batch file that you can tell me that would also work perfectly.

 

I am not trying to wipe all drives when I'm booted with the USB because the USB shows in the list when I just type gdisk32 to get a list of drives and positions.  I would be using a bootable CD when wiping all drives.

 

Thank you so much for any insight!!

Aysia