Western Digital Blue 1TB as internal in optical drive won't work
I have purchased a Western Digital Blue 1TB SATA (112 MB/sec Read, 111 MB/sec Write • SATA III (6.0GB/s) • 8MB cache • 5400RPM • 2.5 inch ) to replace the original Apple included 500GB Hitachi SATA that I have been using as a secondary drive inside an iFixit SATA Optical Bay SATA Hard Drive Enclosure. (I installed an SSD drive as my main HD a couple of years ago).
So the the original Hitachi drive works fine with the SATA Optical Bay SATA Hard Drive Enclosure but it is starting to fail (according to Techtool Pro), hence the need to replace it.
My problem is that once the new Western Digital SATA is internal to the machine I can't read or write (error 51), and I can't do anything to erase or unmount the volume or eject the volume while using the base system (ie. booted from the internal SSD drive). I can reformat it fine as an external HD (inside external casing), and if I boot to online recovery mode (hence not using the internal SSD drive at all).
Could there be an inconsistency with the Western Digital 1TB drive that does not allow it to function properly as a secondary internal drive?
Is this a good question?