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SSHD not being read when plugged into data cable

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?

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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.

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Okay, so I’ve downloded and run the DriveDx drive checker, and it’s throwing up two errors for my old drive (the 2TB one). One is “Current Pending Sectors Count” and the other one is “Offline Uncorrectable Sector Count.” Do those two red flags mean that this drive truly is failing, and I should just spring for a new sshd? Also, the one that’s failed is Seagate’s FireCude 2TB sshd, do you have any recommendations for a different sshd that would preform the same? Or should I just buy it again (after talking to amazon to see if I can get a new drive at a discount since I’ve only had it for 6 months and it’s already failing after very light use)?

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Yeah, the drive is defiantly starting to fail. Get a new drive. I don't recommend the SSHDs though. I see a lot of failures on them. Especially the seagates. Go for a Barracuda Seagate mechanical or shell the extra money out for a SSD.

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I know I should just upgrade to an ssd, but I was wanting a terabyte and getting a terabyte ssd is insanely expensive, and a normal hdd seems to be really sluggish. How fast is the read/write of the Barracuda hdd?

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Both your errors are due to a cable breakdown. I would start there. I would also go with the newer version used in the 2012: MacBook Pro 13" Unibody (Mid 2012) Hard Drive Cable. You'll want to place some tape underneath as it crosses the uppercase as the surface tends to abrade the cable causing it to fail.

As far as the Seagate SSHD drive having issues. The first gen did have issues but the second gen and newer are AOK. But all spinning drives have a higher failure rate more so when you bang them around in a laptop so I wouldn't fault Seagate on that. If you're a banger then go SSD. At the high point of our MacBook Pro rollout we had over 300 systems with Seagate SSHD's. The failure rate was lower than we expected! Even still we migrated close to half to SSD's.

You'll want to do a backup after you replace the cable and then reformat the drive as you need to correct the errors.

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Really? So I should just replace the cable first and foremost because that’s causing me problems? Huh, when I last opened up my MBP the hd cable looked fine, is this just an upgrade that I can do or is it a part that’s gonna cause any sshd I put into my laptop to fail? Haha yes, if I was a banger then I’d definitely want to spring for a ssd which doesn’t have any moving parts, but the only thing I use this laptop for is school work and games (so very little travel time, just a minor commute to school and back). Wow you’ve had a lot of sshd!! So the failure rate wasn’t too high then? Interesting

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