Need a good wipe utility for a HDD with win10 on it. I put win 10 on a HDD I don't own and need to wipe it before sending back. Also, the hdd is taking a poop, so it needs to be fastish. Just need to delete both partions win 10 makes. I tried zap and something else and they don't see 0 or 1 normally now. I tried to use win 10 to wipe it but it can't see the HDD now, or it only allows a repair.

Story: I do field work for now and have to ship lappies back via ups but they don't keep track so I installed 10 for giggles and used the lappy for a month and now want to aend it back. Nothing naughty really, just borrowing to further my tech education IMO. I'm still not able to afford my own stuff that is modern.