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macOS Installer not recognising SSD

Greetings.

My MacBook Pro does not recognize the internal SSD when I try to install macOS on it from

a USB thumb drive. However, If I start up from a external Mac OS X 10.7 disk from another computer, It shows on the desktop. If I try to run Internet Diagnostics I get the error code -6002D. Any help would be great. Thanks :)

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Have you done a full backup of your data already? If you have you'll need to reformat your drive from your external thumb drive to GUID and setup using HFS+ file system. Don't install the OS at this point as you'll want to access the Internet recovery OS installer Ideally you want to get to Sierra or Mojave don't use High Sierra if you can help it.

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@danj The SSD was running Windows 10 from another computer so I put it in the MacBook and started up from my Mac OS X 10.7 external drive and formatted the SSD for GUID and HFS+ and I was going to install OS X El Capitan first on it as the installer won't work on 10.7 but my SSD isn't even recognized in the SATA tab on System

Information if I start up from the installer

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OK so we got half way Good!

Now lets finish put the OS installer thumb drive as well as any other disks or drives in your desk drawer as we don't need them!

Now with the formatted internal SSD installed in your system restart your system pressing Shift-Option-⌘-R keys to get back to the original OS your system had

Reference: How to reinstall macOS from macOS Recovery

If this fails to work you need to replace your HD SATA cable as your new drive is a SATA III but your original HD SATA cable is either the original SATA II cable or the cable its self is damaged Your Hard Drive Cable Is A Ticking Time Bomb

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@danj When i entered the startup key combination I got the blinking folder icon

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@tooth49 - Are you sure you've pressed the keys before the bong? And held them until the boot up bar show up? Try again.

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Have you ever formatted it for High Sierra or Mojave? It may be formatted APSF instead of GUID.

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It is formatted for GUID

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Take a look at this post Prohibitory sign after SSD Upgrade

Have you tried exchanging the internal SATA cable on your laptop? Have you purchased the iFixit cable?

I recently upgraded a MacBook Pro 13” Mid 2012 with an SSD, it worked perfectly for about 4 days and then I got the Prohibitory sign. I’m trying to find a fix for it. Some posts refer to the internal SATA cable that might not be suited for the fast SSD speeds but the replacement cable that iFixit sells doesn’t say anything about compatibility with SSDs so I’m hesitant to buy it.

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Juan - Check out what I posted in the other question. I've fixed 100's of these over many, many years. As SOP every time I take a HDD out for a SSD I always replace the HD cable with the newest version (2012)!

I also fortify it by placing a strip of electricians tape on the upper case where the cable crosses over and lastly I use a BIC pen to help me form the bends around the corners. Creasing the cable will damaged it!

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Hi Dan, yes, I read your post, I ordered the cable from iFixit and I'm waiting to get my hands around it (hopefully by this week!) I added the tape to the chassis as recommended but that didn't help with my previous cable. I hope the new one fixes it.

Thanks!

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