External hard drive partitioning

Hi all

I recently bought a western digital MyBook 2 TB with the intention of partitioning the drive into partitions of 1 to 2 for the purpose of the use of backup time machine on my mbpr 15 "and my wifes 13" mbpr.

Ive formatted disk in OSx extended but new/updated to date in El Capitan disk utility does not give me a partition option its greyed out. Is there something that I miss or a stage i did not?

Thank you

highlight the root of the drive, then click on the partition.

What do you see?

Tags: Mac OS & System Software

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