there is a crypto erase tool if opal or edrive was used to activate the security of the drive. Not sure what drive lock does or if it is using software or the SSD hardware for encryption.
Also there are two different versions of the X400. One is an SED the other is not. If you have the version that is not SED then drive lock would not be enabling the hardware encryption of the drie and would be some sort of software encryption. If that is the case the crypto erase tool would not work and you may want to talk to drivelock support to see if erase can be done.
The X400 SED model number start with SD8TB8U if the model number starts with anything else it is not an SED.
Crypto Erase tool
