MacBook Pro unable to find SSD HD

Sturay wrote:

I installed a 1Tb SSD into my mid-2012 15.4" MacBook Pro. All of a sudden, a few years after the event, the laptop failed to find the SSD. Running through the instructions on how to use the Disk Utility to recover volumes, the internal SSD was available in the list, but there were no options available. I'm assuming that is because it is an SSD, and the OS it wanted to restore was Lion, it is not compatible with Mountain Lion and no longer appears in any volume list.

This means that I cannot start the MBP from the USB drive I installed Lion onto, because it doesn't appear in the startup disks list, and now that it's saying I can install Catelina, but not on any of the drives connected as the internal SSD is not found by the system.

Does this point to a logic board or SSD issue, or is it difficult to say?

The mid-2012 had known failures with SATA cable...

If you have an external enclosure you can pull the drive and boot externally to test the drive itself, this will bypass the internal SATA cable as a test.

SATA replacement 15" MBP mid-2012

https://eshop.macsales.com/item/Apple/9230084#15_inch

Hi,

Resetting NVRAM could solve the issue.

Reset NVRAM or PRAM on your Mac - Apple Support

If it doesn't help, try to run Apple Diagnostics(Apple Hardware Test) if it reports storage device error(VDH002, VDH004).

Use Apple Diagnostics to test your Mac - Apple Support