Why SSD's is not working?

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MacBook Pro 15" Unibody Mid 2012

Released June 2012 / Core i7 processor with Turbo Boost / Up to 1 GB GDDR5 Video RAM

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Pavel Mamontov @pavelmamontov

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Posted: Oct 25, 2016

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Why SSD's is not working?

Hello everyone, I got MacBook Pro 9,1 and I want to upgrade it from HDD to SSD.

I tried Samsung EVO 850 - No luck, only working through USB

Now I got OCZ TR150 - Same problem

But HDD is working fine! I heard about problems wit SMC and BootROM versions, mine is the last versions Boot ROM:MBP91.00D3.B0D / SMC: 2.1f175

Some people in the web tells that changing the sata cable will do the magic, but what the difference between stock sata cable and the other one? (From iFixit)

Sorry 4 my English lol, I'm Russian

Non-workin cable inside

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Dan @danj

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Posted: Oct 25, 2016

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Well to start off your English is better than my Russian ;-}

Yes, you need a new HD SATA cable. While your HD is able to use the current cable your new SSD just can't. It all comes down to speed!

The Apple drive you currently have is a SATA II (3.0 Gb/s) drive, your new Samsung SSD drive is SATA III (6.0 Gb/s). The SATA cable your system came with is only rated for SATA II which is why you need to replace it. Unlike desktop systems laptop cables are finicky!

You need to use the newest version of the cable: MacBook Pro 15" Unibody (Mid 2012) Hard Drive Cable - Apple P/N 923-0084

Удачи!

Product

MacBook Pro 15" Unibody (Mid 2012) Hard Drive Cable

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4 Comments:

Thanks Dan! That means I need to find a part with 923-0084 number, right? (I just want to try find it in the local stores in Russia)

Oct 25, 2016 by Pavel Mamontov

it woud be nice if u tell me what digits gotta be on the cable exactly, thx

Oct 25, 2016 by Pavel Mamontov

Numbers & Numbers!

Apple P/N's are different than the manufacture number. You should go by the Apple P/N number. For reference: Hard Drive Data Cable for the MacBook Pro 15" Unibody - 923-0084. The 923-0084-01 is the newer (better) version manufactures number.

Oct 26, 2016 by Dan

Much love from Russia, Dan! Your support is helped me alot! :)

Oct 26, 2016 by Pavel Mamontov

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Thanks Dan! That means I need to find a part with 923-0084 number, right? (I just want to try find it in the local stores in Russia) — Pavel Mamontov
it woud be nice if u tell me what digits gotta be on the cable exactly, thx — Pavel Mamontov
Numbers & Numbers!

Apple P/N's are different than the manufacture number. You should go by the Apple P/N number. For reference: Hard Drive Data Cable for the MacBook Pro 15" Unibody - 923-0084. The 923-0084-01 is the newer (better) version manufactures number. — Dan
Much love from Russia, Dan! Your support is helped me alot! :) — Pavel Mamontov

MacBook Pro 15" Unibody Mid 2012

Why SSD's is not working?

Update (10/25/2016)

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MacBook Pro 15" Unibody (Mid 2012) Hard Drive Cable

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