SSD not recognized in A1278
Hi, I'm also having trouble upgrading the drive.
I have a Mid-2009 13" MacBook Pro, 2.53 GHz (A1278)
So I tried using a Samsung 850 EVO SSD, I externally formatted the drive via SATA to USB adapter, GUID/MacOS Extended. The system won't recognize the drive.
I've tried installing MacOS Sierra (The '09 MBP has El Capitan on the old HD) on the drive from my other MacBook Pro and it doesn't recognize the SSD either.
I bought a new 2009 HD cable thinking that would do the trick but same issue, the system won't recognize the SSD.
I'm lost because I've tried USB bootable thumb drive as well and it just won't recognize the SSD.
Also can the 2012 MBP SATA cable be used on the 2009 model?
How to get my '09 MacBook Pro to recognize the new SSD or any SSD for that matter. Also the original HD/cable and new SSD (only externally)/cable all work. But, again the SSD just won't recognize. I've also tried resetting PRAM and SMC. I would really appreciate any help anyone can provide.
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