reformatting

My WD 2TB My Passport was replaced and I cannot find the guide I used to reformat it with Disc Utility before. All I can recall is it had a partition with 250GB formatted to backup my Mac, and the remainder I believe was formatted differently to store my files. But I cannot remember exactly how...

I have a 1TB external Toshiba HD that I want to reformat into a clean, single partition. This drive was previously used with the now defunct Transporter Sync. When I connect the drive to my Macbook Air running High Sierra it shows up as four separate volumes. I cant' figure out how to remove...

I am a photographer and artist. normally i use pc so my external hard drive is formatted in ntfs i wouldn't mind changing the format if i had a place for everything. my hard drive is the focal point of everything i do. i have about 1 and a quarter terabytes of info on it. i have nothing large...