Chosen Solution
So my MacBook Pro suddenly went black screen the other day and then it stopped recognizing my 6 months old 2TB Seagate SSHD. When I was finally able to get my MacBook Pro to go into recovery mode and then disk utility, it wouldn’t pull up the sshd that was inside it. It just pulled up the cpu. Freaking out, thinking the sshd had failed on me, I bought a new sshd from amazon and pulled out the old “failed” sshd. Now my MacBook Pro is running (albeit slower since this new sshd is slower than the older one) and I made a startling discovery. I found out, when I plugged my old sshd into a stat to USB adapter, that my old sshd still works fine and it still has all my data still on it. Does this mean that there is a different problem with my computer and I can still use my old drive (which was an amazing drive which it was working)? Do I need to reload mac’s os onto the old sshd before throwing it back into my laptop?
It could be a couple things. You may be having intermittent Flex Cable Failure, the drive might be having Physical Read/ Write issues, or a Bad File System. I would connect the Old SSHD through USB and check the smart status if you can. I recommend Drive DX for this. If the Drive’s smart status is ok and it passes a short test. I would say the Hardware is most likely ok. Next test would be File system. Plug the drive into the computer through USB and Pull up Disk Utility. Try to Verify the Filesystem. If it needs repairs. Run Repair. If repairs are made. Run verify again. This should clean up any filesystem errors. If it can’t repair. Copy the Data using Carbon Copy if you can to a known good drive. Zero the Old one and then it should be okay for use. I would also like to see if the computer recognizes the drive as bootable. Shut off your mac and plug the drive into USB. Hold down Option as you reboot and see if the drive is shown up by boot manager. If it is. try to boot it. If it boots fine and the filesystem was repaired previously. Then it should be fine. If the Flex Cable was failing, you will most likely see this new drive acting slow and possibly having a similar issue soon. Let me know your findings.
