Wiped external hard drive clean by accident

[Douglas Pollard]

  Hell Douglas Pollard here. I was reformatting a few thumb drives that 
were given to me.  I was using G-parted and left my 4 terrabyte "MY 
Book" USB external Hard drive plugged in and  wiped it clean Ubuntu 
can't see it and either can G-parted. AS soon as I relised it was being 
reformatted I panicked and stopped it now it seems there is nothing 
there.  A friend said windows 10 could reformat it but I don't have 
windows on anything. I have notice the progress bar I guess in (Grub 2) 
that goes across to start Ubuntu hesitates  before reaching the end and 
ubuntu will not start so I guess it is trying to read the external drive 
and fails. Unplug  the drive and Ubuntu starts so it seems some thing 
can see it and is trying to read it.?  Any help with this would be 
appreciated.    Doug