OSX on Optical Bay HDD extremely SLOW
Hi!, Allow me to explain.
A couple of years ago I had to install Windows onto this MBP because of work. eventually, (like a week ago) decided to brought a second HDD and a caddy to give so use to the optic bay, and as I read, on this model shouldn't be any transfer rate difference. So I went ahead and installed OSX on this second HDD, a Toshiba one, 7200 rpm, 500GB.
After a long first installing time, and some inaccurate estimated times (it took around all night long) finally it installed Mavericks, weird but I only had to update. I had in mind that OSX was slower than Windows, but this was way too slow, Beachball every 5 seconds, every time I wanted to open a menu it would take around 5 seconds more of spinning ball, and then finally show up. Could take it, so tried a lot of advices online, and decided finally to reinstall.
This time , the installation was a lot faster, but still once I got onto, slow.. Trying to write on Pages it's imposible, every sentence takes about 10 seconds of delay to be displayed. Word its somewhat less sluggish, at times. Finally I tried to troubleshoot by any means, tried switching the disks, putting the original on the caddy and this on the main, and other software general advices (disk space, delete apps from the dock, check spotlight) but the performance won't change much.
Anyway, today I discovered something quite interesting. Usually the activity monitor will be like on pic nº1, low writing/reading activity, and that goes with a very sluggish Mac, on the other hand, when I copy something or transfer files (pic nº2): everything works like a charm!! I can write on word, see videos without lag on youtube, write this question, or do regular work. actually im copying/deleting some music in order to keep the HDD busy and avoid lag, and it works.
So, I don't know what it could be, I tried to change the only config I know, on energy save, "put the hard disk to sleep when possible". but no change. So here's some info.
So, TL:DR; Mac's going extremely slow by no logical reason, OSX installed on optical bay HDD (on caddy). and only works normal when transferring files or any work that involves high disk activity.
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