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How do I repair my WD wdbaar3200abk-00 external drive. It is a 1801 Gb drive, but when it is connected, I only see 298.06 GB. How do I return it to the original volume? Currently there is NO data on this drive I wish to keep, running Win 10 Pro 64 bit with 32 gigs Ram, 2 TB drive (different one). I also have Aomei Partition magic, and Aomei Backupper Pro. Neither of these programs made a dent.

Try using Hard Disk Sentinel to see if it reports any problems with the drive.