![]() ![]() Back to my friend's home, I saw the new disk had one connector less than the old one had at that moment I realised Apple is now shipping disks with built in thermal sensors (and I knew fans run at full speed when one sensor is missing). We left the bad disk in the shop, because they proposed us to search for another controller for this disk (so we may hope to repair it if the culprit is the controller). We went in a shop to buy a new hard disk. In the meantime, I've another problem related to this (sorry for the extra post, the Edit link is now gone). Actually, the chances of being a controller failure are likely, because the iMac whose this disk came from has problems with the fans (its owner says they don't run (yes, the three fans) and I have to admit I haven't hear them for the short time I saw the computer (before I opened it)) the computer being hot, this likely explains why the disk has failed (it was not that old) and it may have first defeated the controller. Well, you're right, especially for a hard disk. leaving me with these parting words: Good Luck. However at this point you have little or nothing to lose by examining all possibilities. The reality is that the odds of it being the controller are rare, and the odds of it being a mechanical failure are high. Usually they're held on with a few screws and then cables running between the drive controller and the heads/platteres/motors, etc. The best you could hope for is a drive controller board failure, in which case you could swap out the controller card. The fine point soldering irons I have would be bridging 2 or more pins at best. To be honest if I took one of my finest point soldering irons I couldn't even get it to make contact with less than 2 of those connections simultaneously. The days of pulling chips off and re-soldering them are long over. The connector is smaller than the dime's diameter!!! What you're looking at is a picure of dime next to a connnector. On the version I have it's on page 9, but they might have updated it since then. Scroll through it until you find the picture of a coin sitting on a circuit card. At this point it won't help you, but if you go to their downloads section and get the book on hard drive troubleshooting I think you'll see why the idea of soldering a chip is not feasible. We use a product named Scannerz to test drives. (posted in the iMac section because the disk comes from such model if the discussion extends, it'll be in the correct section). Please, does someone have knowledge about how this works (or how DiskWarrior gets its error codes)? My current guess is that the error code (2738) is what's being reported by the disk's firmware (I doubt DiskWarrior would map codes into its own table). So I want to discover the meaning of this code, but I have not much experience in how the kernel and disks' firmware work. Using Google, I've seen similar messages, sometimes with a different error code (2747 or 2756), but no one seems to be able to actually tell the difference between these codes, nor anything at all the only answer at each post is "The hard disk has failed, replace it", which is far from informative. My last hope is to discover what 2738 means (I guess -36 is the well-known Mac OS error code for read/write error). When I select it, it says "directory cannot be rebuilt due to disk hardware failure (-36,2738)". In further attempts, DiskWarrior won't let me rebuild the disk. Because I needed to log in another user, I finally aborted this attempt. The first time, it ran for 2 days, showing this message: "Speed reduced by disk malfunction: 10'215" (of course, the number was growing). In a last resort (my friend needs the data), I've tried with DiskWarrior. The disk is clearly dead (up to some point). At mount-time, the disk spins and makes the usual noises when tools try to read to it, no noise happens. Data Rescue says it can't find any file (even in the extensive search). ![]() It won't mount and disk utility can't repair it. I'm trying to repair a hard disk for a friend.
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