Hi all, I have recently purchased a Crucial SSD MX500 for my Mid 2012 Macbook Pro. I followed the Installation Instructions for Mac, and received an error when Restoring my SSD to Clone it. I formatted my SSD as a Mac OS Extended Journaled with a GUID Partition Table prior. I have also tried formatting it prior to restore as an APFS with a GUID Partition Table. The error I see states "APFS inverter failed to invert the volume - Input/output error / The operation couldn't be completed. (OSStatus error 5.) Therefore, I erased the drive again (Mac OS Extended Journaled, GUID Partition Table), booted into internet recovery mode, installed Mojave 14.1, booted up from the SSD and used Migration Assistant to transfer my data. All of this was done with my SSD connected externally via a SATA-USB cable. Upon installing the SSD, I see that Flashing Question Mark Folder (can't find system software). However, when externally connected, I have no problem booting up from the SSD when using option to select my start up disk. I have tried to do a lot of troubleshooting with regard to the APFS format required by Mojave, and have been unable to get my SSD bootable on it's own. Any help would be greatly appreciated. Thanks!
... View more