Reformatting and new software loaing procedure?

I want to wipe off my Passport Elite (2500ML) and start over. The backups are clogging the system and the software is old and includes some unnecessary programs (Mionet?). My goal is to have it backup according to set plans for each of my three computers. What is the best way to proceed? What is the essential and newest software that I need?

Thanks!  SpoonNut

If you just want to reformat the drive, check the link below…