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patrickkwk

macrumors newbie
Original poster
Dec 1, 2014
1
0
Hi all,

I own a mid 2012 15" mbp and was running Samsung 840 250GB SSD (not the EVO or Pro version) on the main bay.

Then, I decided to upgrade it to 850 Pro 256GB and use the 840 in the optical bay (via ifixit dual drive enclosure).
I also installed TrimEnabler and got both drives TRIM enabled.

However, when I ran Blackmagic test, the following result is obtained for the 840 (the 850 Pro performs superbly with avg. 520 mb read/write):
Write: 50 mb/s
Read: 130 mb/s

I have also formatted the 840 SSD to Mac Journaled with only 1 partition.

May I know how to get the 840 to work properly.

*Sorry for not including screenshot as I am posting with another computer.
 
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