Imac stuck on boot screen I know that this is a recurring topic but wondered if any one of you is experiencing this issue with mac os high sierra?

I don’t know what really happened on the eve; but the day after when i switched it on i got stuck on the boot screen with the apple logo and progress bar completed.

I did run the disk utility tool and found no issues with the hard disks. I also notice that holding down the shift key to enter the safe mode does nothing to it; still same screen.

Other key combinations are failing like resetting nvram.

I got work to complete and this is costing me too much time.

Thanks and kind regards,
Avinash
I had to format the Mac and did a clean install. This solved it.