macbook ssd upgrade snag

Hello,


I have a mid-2012 MBP that I’m upgrading the SSD and going with Mojave OS. Using a crucial MX500 2TB drive.


I used a bootable USB to format and install the OS. I formatted to APFS as recommended online and installed the OS. When booting externally it booted fine. When I did the swap to the internal drive slot after powering on I get a folder with a ? in it.


Laptop booted fine, however very very slowly from the old Toshiba HDD so I assume the SATA ribbon inside is okay.


Did I perform this wrong. Can this machine run an internal drive on APFS?

Posted on Sep 18, 2023 4:47 PM

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macbook ssd upgrade snag

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