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Mid 2010 Modell A1278 / 2,4 oder 2,66 GHz Core 2 Duo Prozessor

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No relief for unbearably slow ssd on 2010

I have not seen an answer that matched my issue.

Macbook 2010 refurbed by me. I have added the same ADATA 240 OR 480gig to, probably, 100 Macbook Pro units. From 2008 to 2012. I have never heard or seen an issue like this. Hopefully, one of you have.

Original drive 320 Apple drive, rotational, works fine but speeds are always better in ssd.

Installed Adata 240gig

Started up with High Sierra boot usb

Run disk utility to format to journaled,run disk First Aid to check for errors. All good.

Continue to install. I have used this USB several times. It is not the USB that's in error.

Starts to build system on SSD. Normally, a 1 hour job with usb and gig speed hard wire. This build decides to take 7.5 hours. Not good.

Order new drive cable, replace SSD. Same speed, same 7-9 hour build.

Put rotational drive back in. All good, expected speed. I've gone through 2 cables, 2 drives, speed tests with BM. Something just isn't right with this unit and ANY SSD

Yes, after system installed, Trim enabled. No difference after 4 days and no apps installed.

Insert road block, no clue what could be causing this? Never, ever have I experienced this type of behavior only with an SSD. It is set to startup drive. All of the suggestions I could read here, have been tried to no avail.

Startup disk-yes. Trim can't enable without system on disk, but yes. Cables tried 3. Drives-tried 2.

Firmware? Connector is fine on logic or rotational would not work. It is a Sata III drive to a SATA II connection, but never experienced this problem on the other 99 I have done.

Totally lost, and that's hard to do fir me. I never give up reading and trying.

Thanks for any help.

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Yep! You fell into the trap! A Fixed SATA III (6.0 Gb/s) SSD won’t play well in a SATA II (3.0 Gb/s) system! You need either a Fixed SATA II (3.0 Gb/s) or a Auto Sense SATA III drive to work properly in your system.

OK what is this Fixed and Auto Sense all about? Basically, When SATA III was introduced the drive makers got a lot of returned drives which popped claimed didn’t work in their systems (which was true!) At that point a few drive makers created a new series of drives which senses the systems SATA port’s I/O data rate and match it! Its similar to how your systems Ethernet speed is deduced from 10, 100 MBPS or even 1GBPS. But just like Ethernet plugging in an older fixed speed 100GB connection into a 10MBPS hub won’t work!

So lets find one of these Auto Sense drives like Samsung 870 EVO if we look at this spec sheet we find the Interface line shows us: ”SATA 6 Gb/s Interface, compatible with SATA 3 Gb/s & 1.5 interfaces” So this drive is able to match to your systems slower SATA port! Now lets look at the ADATA SU650 we see the Interface line only lists SATA 6Gb/s (SATA III) which is a Fixed speed drive!

So stop pulling out your hair! Find either a Fixed speed SATA II (3.0 Gb/s) drive or a drive which clearly states SATA II (3.0 Gb/s) support like the Auto Sense Samsung SSD.

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Thanks, Dan. I thought it may be along those lines.

But, why would it work perfectly in a 2008 Macbook (non-pro). That's the puzzling part to me. And it worked in other 2010 models, as well. Same 1278's. That's what led me to believe it was a firmware update that corrects the autosense?

Like I said in the post 1 out of 100 just seems very odd. Like the firmware had been locked for 11 years, or something. Thanks for the answer. I hate spending more money, but maybe I can return this to Amazon and purchase one of the drives you had mentioned.

I failed at finding anything at SATA II. Do recommend an inexpensive 240 or 250? I build these for kids that are needy and other non-profits that are in need of Macs, in particular. I make no profit. It's a great hobby, and when I get lost, this is the first and only place I can rely upon to stop the aging process from accelerating any more.

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So why does it work in a 2008 MacBook system? The SATA port logic is different! That series uses the NVIDIA North Bridge logic unlike the 2012 MacBook Pro while its also SATA II (3.0 Gb/s) it has a slightly deeper buffer so its less prone to buffer runout.

Sadly like the Ford Edsel older Fixed speed SATA II drives are hard to find as other than people like you who are trying to keep older systems running. Many of the companies have also dropped Auto sense drives as the market for them is less and the price pressure forces them to also drop the feature. Many of the older ADATA and Kingston drives where, to day they are not.

I would look on Amazon and eBay for older stock drives just be careful! As many of the Jobbers selling have no clue what they have. HDD's or SSD's. Sorry I can't aim you to smaller drives that are SATA II as I just don't know any more.

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Did you by any chance found a solution to this? Experiencing the exact same issue when attempting to upgrade the old 3.5-inch hard drive to SSD.

Crucial MX Series 1TB. The iMac keeps randomly shutting down or restarting during OS Installation. If the OS successfully installs, it refuses to boot.

When I plug back the old drive, everything works just fine.

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@A.Derya Erguc This series system requires a SATA II (3.0 Gb/s) drive. You can't use a fixed speed SATA III (6.0 Gb/s) drive. There are Auto sense drives which will lower their I/O speed to match the system's interface like the Samsung 870 EV0. Here we can see it supports SATA 6 Gb/s Interface, compatible with SATA 3 Gb/s & 1.5 interfaces Unless your drives spec sheet states it like this its a fixed speed drive and won't run properly in your system.

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Thom Hemler wird auf ewig dankbar sein.
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