Internal Hard Drive only recognized by target disk mode
This is a MacBook Pro (13-inch, Mid 2009). Booting it brings up the circle with a line through it.
If I put this MBP in target disk mode and boot another mac using this drive, the HD works great. Drive Genius reveals no bad sectors. The hard drive is okay.
If I take a good MBP and put it in target disk mode, and boot it's HD on this 13" MBP, it also boots okay. However, looking in disk utility and system profiler, the internal SATA drive isn't present.
My suspicion would be a bad SATA cable - but I think we can rule that out because I can access this drive over target disk mode.
Anything I might be overlooking?
Is this a good question?