Chosen Solution
Strange issue here. The client brought this iMac in because it wouldn’t boot fully - it freezes about 90% through the progress bar. Passes all ASD tests. Issue was originally resolved a few months ago by rebuilding the drive directory in DiskWarrior. Doing the same causes it to boot again, but obviously there’s a deeper issue. The SMART status shows temperature warnings and Hardware ECC Recovered issues. I replaced the Seagate Barracuda 7200RPM drive (about 3 years old) with a new version of the same model. Within one day, it’s showing Hardware ECC Recovered issues as well! I’m at a bit of a loss. I don’t know what else to replace, but it sure seems like a hardware issue with some other part of the system. As a side note, Apple had a hard drive warranty extension program on this model. The client’s existing drive was put in by Apple under this program 3 years ago, even though he’d had no issues to that point, and until 3 months ago. Does anyone have insight into this?
I think thats your problem here using too fast a drive. I often see this as people get the direction of compatibility crisscrossed. Double check your drives specs. Make sure you have the second version of SSHD I’ve listed here below. Using a FIXED speed drive as you have here: A SATA III (6.0 Gb/s) system can support SATA I, II & III drives.A SATA II (3.0 Gb/s) system can support SATA I or II drives (not SATA III) Using a drive which offers SATA speed sense technology alters this! As it will slow down the drive to match the systems SATA port speed. Some drives will do all three speeds (SATA I, II or III), while many newer drives only interwork in either SATA II & SATA II systems (not SATA I) One of the issues we are starting to see is the hard drive companies are starting to do away with auto sense drives. Their reasoning is many of the older SATA I & SATA II based systems are now being retired so there is no need for the expense of the auto sense logic. Most drives coming out now are strictly SATA III. So be careful! References: Barracuda 7200.12 SATA II (3.0 Gb/s)Destop SSHD - ST1000DX001-1NS162 (Fixed speed SATA III - 6 Gb/s)Destop SSHD - ST1000DX001 (Auto sense)
