Things get weird when I replaced my HDD with an SSD since my MacBook Pro (Mid-2012) slowed down horribly. I get beachballs everything I did on my MBP and it was so painful.
I thought it was because of malfunctioning HD, so replacing it with an SSD gonna both speed up my system and help me to get rid of old HDD. I installed OS X to my SSD with and external box, run my computer over that and boom! MBP speed-ed up and it seems to worked out. So, I open my MBP, replaced old HDD with my SSD, I rebooted my MBP and it was worse than before. How could this be possible?!
So I decided to do something else. I put my old HDD to USB converter box, connect it to my MBP, run OS over that. MBP works like charm.
I was wrong, there is nothing wrong with my HDD. Does anyone have any idea regarding to this?
Any input is appreciated.