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Mid 2012 model, A1278 / 2.5 GHz i5 or 2.9 GHz i7 processor.

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This is something other than a traditional HD issue

Traditionally we have had issues with the 13” 2011-12 MBP with failed hard drive/IR cables and failed drives. But this seems to be something else.

Yesterday I had two machine come back in.

MBP i5 2.3 GHz 13” Early 2011

MBP i5 2.5 13” Mid 2012

MBP i7 2.9 13” Mid 2012 (mine)

All the above machines came in with problems reading the drives.

All got new hard drive 2012 cables and Seagate 1 TB SSHD FireCudas for a second time!

The first two were repaired within the last month and a half and had already had the cables and drives replaced.

The third drive is one I have for stock. On it, it runs perfectly with Mavricks but nothing above that.

Something else is happening with these machines and I strongly suspect Apple of doing things in their updates to disable 3rd party repaired machines.

I have also seen this on 2011=12 iMacs (both the 21” & 27” machines with replaced FireCuda drives and OWC thermal sensors.

We have been giving the standard answer of hard drive cable replacement but I firmly believe this is something Apple is doing.

@danj @arbaman @oldturkey03 Do others have any opinions on this problem or solutions?

UPDATE

I would like to see if a Mojave Beta will fix this issue but I’m not signed up as a developer any more.

SIDE NOTE on Thermal sensors

I have ordered in the 2N3904 Transistors and 2N4401 NPN Transistor 40 V 600 mA 4401 TO-92 to see if these cheap things will work instead of using those $45 per pop OWC sensors.

Отвечено! Посмотреть ответ У меня та же проблема

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Don't forget the newer 2.5" FireCuda drive is now a fixed SATA III (6.0 Gb/s) drive so don't use it in the older SATA II (3.0 Gb/s) systems. The 3.5" FireCuda drive is an auto sense drive so it works across the different SATA I/O speeds!

из

I'd be inclined to think about some kind of dislike between Firecuda drives and latest Mac Os versions. Unfortunately I don't have around any of that kind of drives to test, however I have always around 3/4 boards of i5 2,3Ghz and i5 2,5Ghz, all fixed at component level and tested and I didn't record any problem with Ssd or standard drives and updated with Sierra/High Sierra.

Funny enough, the bad Hd cable plague on this side of the ocean seems not to exist almost at all. Anything you might want me to try, just ask, with pleasure.

из

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You are correct! Apple is forcing a newer file system with High Sierra which is messing up older SATA based systems!

DON’T USE HIGH SIERRA APFS on SSHD’s, HDD’s or SSD’s on ANY SATA BASED SYSTEM MacBook, MacBook Pro, iMac or Mac Mini 2012 or OLDER!!

Stick with Sierra!

Update (06/23/2018)

Mayer: So, do I try to back up and replace the drives then warn customers?

If they are running HS APFS then yes you'll need to make a full backup and then scratch the drive and install the older Sierra with GUID/Journaled being the best solution for now.

Mayer: Are the drives permanently damaged?

No, the drive should be OK it's the APFS format and in the case of SSHD's the way they work (which is the correct way to do things) is not something Apple has tested with APFS. Even with straight SSD's there are issues!

Mayer: If I format a new drive with APFS to start off with, will it then work with High Sierra?

As long as the user does not upgrade the file system when prompted. You can use High Sierra with the older GUID Journaled file system.

Do not format the SATA drive straight up with APFS as I don't think that matters as the issue is how APFS works under the hood here that the real issue.

Mayer: What have you been doing on these?

I keep the older GUID/Journal file system on any SATA based system coming in and tell people to stick with Sierra.

Mayer: Why no warning from Apple on this?

I think we'll need to wait for MacOS Mojave (10.14) hopefully it addresses the issues with SATA based systems. Its also possible Apple will ignore these older models with the release.

As to why no warning, Apple is falling on it self on QC!! Hardware & Software!

Between the butterfly keyboard mess up (check my META posting) and not getting any TN on the iMac Pro VESA mount screws (with replacement screw offer) or even pulling the product off the shelfs!

I'm getting worried Apple was so focused on their new building staffing every failure is falling off their radar until we have a massive public cry!

Software is likewise not up to Par both OS (iOS & MacOS) I've posted bugs for the last year with no follow up or even seeing a fix in the iOS & MacOS updates.

I hope some Apple person is reading this post and rights the ship as its getting pretty bad here.

What adds to this is no new systems coming out that at least are using the better CPU chips and go back to the older Unibody frame with all of the ports for the REAL pro’s. I really hope they make a few AMD CPU based systems too!

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So, do I try to back up and replace the drives then warn customers? Are the drives permanently damaged? If I format a new drive with APFS to start off with, will it then work with High Sierra? What have you been doing on these? I know you don't get many older machines. Why no warning from Apple on this?

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