Hi, My My Book Essential 3TB external drive connected via USB is no longer showing up in Finder after upgrading to Mavericks. I’ve read about the issues surrounding Mavericks, however most seem to be with the drives showing up as empty, whereas mine doesn’t appear at all. Once it appeared in Disk …

My Book Essential 3TB Not in Finder

BAreEhD November 4, 2013, 7:23pm 3

Hi John, thanks for your reply. Since my original post I did indeed check it with another computer that hasn’t yet upgraded and it did work.