Jun 12, 2012
I have a 15" MacBook Pro on my hands with some sort of HDD issue. The machine suddenly stopped booting and so my first thought was that the HDD has failed or that the filesystem had become corrupt. My files were all backed up, so I went ahead with a reformat and reinstallation of Lion. ¬†At firat Verify Disk, run from the Lion boot disk, reported numerous errors that Repair Disk couldn't fix. Fair enough. I swapped the old drive out for a new one that I knew to be good. (And, in the meantime, reformatted the old drive while attached externally to another machine without issues -- so maybe there's nothing wrong with this drive after all?) But no dice this way either: Lion reinstallation fails with an uninormative error message ("An error occurred while preparing the installation."). And if I attempt to alter the partition structure of either drive (either the known-good drive, or the original drive) or to erase the drive, I am told that the partition could not be unmounted. I find this odd, since I have booted off the Lion install DVD, not the HDD in question. ¬†
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So, I'm left to conclude that something is faulty. I think I can rule out the drive itself -- I have two drives that exhibit the same symptoms, both of which behave fine in another MacBook Pro. I also think I can rule out the SATA controller/logic board since there are no evident IO problems with the DVD drive and, other than the HDD issues, I can run the Lion installer (as well as an Uuntu LiveCD) without difficulty. So what's left? Could it be the SATA cable?
MacBook Pro, Mac OS X (10.7.1)