manishmk
Level 1 (1 points)

Q: Macbook Pro 2012 can't detect Samsung Evo 850 with OS X

I just installed Samsung Evo 850 in my Macbook Pro 13' 2012 model. I had several issues with this process,

 

1. When I used Canbon Copy Cloner to clone my existing hard drive to SSD, Macbook booted up with the Apple logo and loading progress bar. However it stuck there after the half of the loading was complete. When I tried to reboot the machine, it only displayed the blinking question mark folder icon.

 

2. My initial guess was that there might be some issue with SATA cable. Just confirm this I started my Macbook with Linux Mint live installer. I was able to see the SSD there. The disk utility equivalent of Mint also allowed me to mount, unmount and format the drive. So I am thinking that this issue is not related to hardware of SATA cable.

 

3. After this I removed the SSD and put back the original HDD. I reformated SSD to Mac OS Extended (Journaled) used SATA to USB cable. Each time I connect the SSD using SATA to USB Yosemite is able to detect it in disk utility. After this put back the SSD into Macbook to perform a clean install of Yosemite using USB installer. The disk utility in the installer detected the SSD but did not allow to erase, mount or unmount the SSD. I was getting the error message that the disk can not be erased (or unmounted). Since I had already formated it, I tried to proceed to with the installation process on SSD. However, I got the message that installer can't proceed due to error and restart the installation process. After this point, I checked the SSD in disk utility. Now the disk utility said that the SSD is an 'external' one in the info at the bottom. The icon also changed from internal HDD icon to external HDD icon. I was not able to do anything (erase, unmount) with the SSD. Every option was greyed out. I restarted the disk utility and SSD was gone from it.

 

4. I started the system with Linux Mint live installer and the SSD was accessible again (erase, partition).

 

I am not sure what might be the issue here. I am going to perform a clean install of Yosemite through SATA to USB cable, enable trimforce and put back the SSD. I don't think this will solve the problem as Yosemite has issues with erasing (and after that detecting) the SSD even with USB installer. I could not find the exact solution for this question in the forum. Most of the other answers suggest to change SATA. However, this does not seem to help everyone. If SATA cable is at the fault then why the disk is completely accessible with Linux live installer. Any help is appreciated.

MacBook Pro (13-inch Mid 2012), OS X Yosemite (10.10.5)

Posted on Sep 22, 2015 7:18 PM

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manishmk

Q: Macbook Pro 2012 can't detect Samsung Evo 850 with OS X

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  • Helpful answers

  • by anil_861,

    anil_861 anil_861 Oct 3, 2015 4:44 PM in response to manishmk
    Level 1 (0 points)
    Oct 3, 2015 4:44 PM in response to manishmk

    Faced Same issue , in my case i connected Mac original HDD as external and plugged Samsung 850 EVO with internal cable .

     

    Disk utility hanged on ' waiting for disk to reappear" .  I replaced hard drive cable with new one and SSD got connected.

     

    Samsung 850 EVO works fines with OS X El Capitan .

  • by dhadi,

    dhadi dhadi Sep 6, 2016 9:05 PM in response to manishmk
    Level 1 (4 points)
    Notebooks
    Sep 6, 2016 9:05 PM in response to manishmk

    I have same problem. Installed evo 850 in internal SATA (replace original HDD) and cannot detect by disk utility, its mean I cannot install my EL Capitan. I have old Intel SSD, 320 series, 40GB, SATA 2. I put this SSD in internal SATA and disk utility can detect, then I install EL Capitan successfully.

     

    I have 2 (two) summary:

    1. My MBP 2012 do not support SATA 3.

    I think this is NOT correct because original HDD is SATA 3 (HGST 750 GB, 5400 RPM)

     

    2. My MBP 2012 or original SATA cable CAN NOT supply enough power to Samsung SSD EVO 850

    Original HDD consume power at 700 mA (5V) while Samsung EVO 850 consume 1.4 A (5V).

     

    Anyone have suggestion or information?

  • by alex7375,

    alex7375 alex7375 Sep 6, 2016 10:39 PM in response to manishmk
    Level 2 (200 points)
    Desktops
    Sep 6, 2016 10:39 PM in response to manishmk

    Replace the sata cable.

     

    You may also need to reset SMC, NVRAM, PVRAM.

     

    Upon installing a new hard-drive your macbook will look for the old drive if it can not find it it will hang with a grey screen. Solution is to reset SMC, NVRAM, PVRAM.

     

    http://www.macworld.com/article/2881177/how-to-reset-your-macs-nvram-pram-and-sm c.html

     

     

    How to reset NVRAM (or PRAM)

    If your Mac is not booting correctly or one of the functions listed in the previous section is acting strangely, you can perform a simple reset of your Macís NVRAM or PRAM. Resetting your Macís NVRAM or PRAM will reset the data stored to its default setting. (Note: As always, we strongly recommend having a complete backup of your important data before troubleshooting your Mac.)

     

     

    The process for resetting PRAM and NVRAM is exactly the same. Simply follow these steps:

     

     

    1) Turn your Mac off.

    2) Turn on your Mac and when you hear the startup chime, immediately press and hold the Command-Option-P-R keys. (Note: You may need a wired keyboard for the reset).

    3) Hold the keys until the Mac restarts and you hear the startup chime for a second time and then let go of the keys.

     

     

    After resetting NVRAM or PRAM you may need to reconfigure some of your Macís settings. If you are still having issues with your Mac, you might want to consider resetting its SMC.

     

     

    What is SMC?

    On Intel-based Macs, SMC stands for System Management Controller. The SMC chip controls your Macís sleep function, power, various lights and indicators, fan speed, and keyboard backlights among other things. So if your Macís fan is out of whack, indicator lights are misbehaving, it wonít respond properly when closing the lid, or the Mac wonít turn on at all, you might want to reset the SMC. (Note: Again, be sure to have a complete backup of your important data before resetting the SMC)

     

     

    How to reset SMC in a MacBook with a non-removable battery

    1) Shut down the Mac.

    2) Connect your power adapter to your Mac and to a power source.

    3) With the Mac powered off, press Shift-Control-Option and press the power button at the same time.

    4) Release all keys and turn on your Mac.