2013 MBP unable to see new internal SSD

hard drivehigh sierrassd

So I have a 2013 MBP that I'm trying to install to give to my friend. I've bee running a 500GB Samsung Evo 850 for a few years. I'm trying to put in a 250GB one in.

I've managed to install macOS High Sierra when in a usb cage I've got. It boots just fine off of my original SSD. So I don't think it's the cable or the ssd.

I've been installing off of a USB installer I made using my new macbook. I've reset the SMC and PRAM.

EDIT:

No idea what's going on. I've given up and left the 500GB drive in the computer while I keep the 250GB with my stuff on it on the side.

Best Answer

Is the new SSD properly formatted? I’ve had issues before where the drive was still FAT or whatever, but the Mac partition was properly formatted and looked ok.

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re 1: hard to say - if you can spare the Money you should go for the 850 bc. of a (probably) better Garbage Collection (see #3), else go for the 840.

re 2: The best tutorial for replacing the optical drive with a harddrive (or SSD) can be found at iFixit.com, f.e. this one. You should search for the Tutorial for your model, the link i posted is probably not for your model.

re 3: There is a hot discussion going on if Trim should be enabled or not and if that is a bad thing. Fact is, Apple has Trim Support enabled only on its own OEM SSDs and disabled it for third party drive. There are Tools to enable TRIM Support, but it could be a not necessary bc. of a better Garbage Collection within the SSD Firmware (see this article and this Article). For general Infos i recommend this Article from Samsung

BTW, to create a homemade Fusion Drive you need to use the 'Core Storage Volume' Command. You can look it up with

man diskutil

look at the 'coreStorage' section. There are some tutorials for creating a homemade Fusion Drive, but it's a very painful process.

Macbook Pro 13′ Late 2011 didn’t see Samsung 850 Evo SSD on boot

The problem was with Hard Drive Cable – it worked okay with SATA 2 devices, but can't recognize SATA 3 devices. On the similar MacBook Pro with stock cable everything worked fine.

After I replaced it (https://www.ifixit.com/Guide/MacBook+Pro+13-Inch+Unibody+Late+2011+Hard+Drive+Cable+Replacement/7655), everything also started to work.

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Macbook Pro 13′ Late 2011 didn’t see Samsung 850 Evo SSD on boot

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