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I found that on all three cables one of these tracks had broken at the same place. I used a multimeter to do a continuity test on these tracks. There are 5 thin copper tacks, which connect to the 7 pin side of the SATA connector. I had kept the three old cables so I decided to find out what had gone wrong with them. I bought my MacBook Pro mid 2012 version back in August 2013 and I am just replaced the HDD cable for the third time. If I could find something that can somehow easily and definitively sniff out these bad SATA cables, that would make my life a whole lot easier. DiskWarrior and SMART Utility are the main tools. But there are a few tools that the Pros use that actually DO stuff. If that is the case, then there must be SOME kind of utility somewhere that can see these errors? There are plenty of utilities out that that have fancy 3D interfaces, but do absolutely nothing (tech tool etc). So what could be causing this? The only thing I can think of is SATA bus errors that only happen intermittently (on a scale relative to the amount of i/o calls a hard drive does). JUST like a hard drive with lots of bad blocks.
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They just hang for a while randomly, then come back. Computers with bad cables don't crash, or freeze.
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But that's not how things go in the out-of-warranty world of independent Mac repair. I know the official way to diagnose a problem is to start replacing parts until the computer is fixed, and that last part was your problem. I know all about Apple service procedure. because, there's no way to directly confirm the cable is the problem. I never really know if it's going to fix the problem or not though. But I've replaced a lot of these drive cables and I'm doing another one tomorrow. You might think "come on, how often does a simple cable really go bad?" Well, I've never had a traditional desktop style SATA cable go bad. This is a much harder problem to diagnose, because it generally acts just like a system with a failing hard drive, but the drive will pass a real SMART test with flying colors. That's the little flat ribbon cable that connects the hard drive to the logic board. So unlike the Genius bar, I can quickly diagnose a bad hard drive without having to infer the problem through symptoms.īut one problem that I've noticed really being on the rise lately, is a failing hard drive cable in MacBook Pros. While Apple's own tools (hardware test, Disk Utility) do almost nothing to positively confirm a failing hard drive, there are several other tools (SoftRaid, SMART Utility) that can read the SMART data and tell you for sure that a drive is failing. By far the most common thing I do is replace failing hard drives.
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SATA cables, or serial ATA cables, are just one variety of transfer cables and data cable cords.
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