Macbook Pro 2012 Mid - problem with HD & SSD - solved

[kidstretch]

I bought a Crucial M4 256 GB SSD and tried to put it with a caddy in the place of the optical drive, running the OS. it recognized the SSD but couldn't boot from it. After a lot of tries, I solved it by installing the SSD on the main HD slot and putting the old HD on the optical drive space by using this caddy.

Now, i've read that it's a good caddy, but i'm suspecting that maybe this was the cause of the problem, that it works ok on the HD but not good on the SSD.

Just a heads up to anyone who has similar problems.

 

[JGoings]

The Optical Bay and HDD Bay differ in speeds, SATA II and SATA III respectively. You'll want the SSD in the HDD Bay, not the Optical (where you would put your spare HDD for storage, with a caddy).

 

[Freyqq]

The Optical Bay and HDD Bay differ in speeds, SATA II and SATA III respectively. You'll want the SSD in the HDD Bay, not the Optical (where you would put your spare HDD for storage, with a caddy).

I don't think that is true in 2012 models anymore.

 

[Wafflausages]

The Optical Bay and HDD Bay differ in speeds, SATA II and SATA III respectively. You'll want the SSD in the HDD Bay, not the Optical (where you would put your spare HDD for storage, with a caddy).

This is only on the 2011 models. The late 2011 had SATA 3 in the optibay but something about them caused sata 3 to have problems, so only sata 2 worked in the optibay. The only perfect working SATA 3 2011 model is the late 13". If you want a way to get SATA 3 in the optibay for a 2011 model look here