iMac startup stalling at 30%.
Hi my iMac is stalling during the startup process. Using any of the following methods the result was the same: progress bar gets to about 30% then stops progressing.
It has been left overnight in this state.
I have tried from built in HD, external usb HD and yosemite installer on thumb drive.
I have succesfully booted a macbook pro using the iMacs built in hard drive in target mode as the startup drive for the laptop.
So it does not appear to be a drive issue!
In verbose mode starting from recovery partition (on a cloned ext usb hd) it stops at:
In verbose mode starting from tested clone of internal hd it stops at:
Safe mode yields the same result.
In single user mode I can run fsck. No improvement.
Is this possibly a pram battery issue?