Will HD replacement fix the problem?
My late 2009 iMac, 11,1, 4core i5, 2.66 GHz, Mavericks, will only boot up in safe mode. It will not boot from a FW800 HD, or a USB HD, nor a OS 10.6.2 optical disk. It shows all of this with option restart, but just like the internal HD boot, all stop at the Apple logo gray screen.
This was a sudden event, away from home and returned to find frozen with black screen, would only start in safe mode. Repaired permissions and verified & repaired drive. Can boot a MBPro from this drive in target mode.
I used optical drive to run a hardware test. With short test: error code 4MOT/4/40000003:HDD-1248 or -1243.
With long test: error code 4MOT/4/40000003:HDD-1273 consistently.
SMARTReporter does not show problems (safe mode)
From what I read the error indicates HD needs replacing, but will replacement solve the problems?
Is this a good question?