El Capitan not reading my seagate SSD!

I bought a disc of seagete and I wanted to use it to back up files from my computer but I El Capitan, and I connect my drive to the computer and NEVER HE BED! It's new and I can't use it. I have read that I need to Paragon, I install a large number of versions of paragon and no version works. I read that I had to format the drive exFAT, and it seems to work, but after a few days stopped working.

What can I do?

I know there are other similar issues, but none of them mine anser.

If that's the only Mac files, then you must format the new drive as GUID extended journeled using Disk Utility.app

Tags: Mac OS & System Software

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