Problems with El Capitan w / WD external hard drive

I have trouble with El Capitan find the external hard drive. I put a couple of external hard drive in both my mac mini.

OS X El Capitan

10.11.3 version

Mac mini (late 2014)

Processor: 2.6 GHz Cose i5

My external 2 TB USB drive working

My not-so-working external WD My Book

  • FireWire 800
  • FireWire 400
  • USB 2.0

It was before mini mac OS El Capitan. But lately, my mac mini showed that the WD My Book was read-only. Then, the WD hard drive disappeared from my finder! Same with Disk Doctor app.

What format is the external drive in?

If you have used NTFS before OS X El Capitan your third-party NTFS software will need to be updated.  OS X can natively read NTFS volumes, but the third party software is necessary to allow write access.

If your player is in HFS +, then it could be a permissions problem.

Tags: Mac OS & System Software

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