Problem with booting

[perquesta]

Sometimes when I boot the computer in the morning, and sometimes when I reboot during the day, the computer displays a circle with a diagonal bar through it and the booting process stops.

If I then hold the power button in for while the Apple logo appears and the booting process then proceeds normally.

2017 27” iMac
10.14 Beta (18A314h)

 

[wwooden]

My MacBook Pro with the public beta kept getting stuck at the Apple logo on bootup. I tried holding "shift" to go into save mode, but that didn't solve it. I then turned off my bluetooth Apple keyboard and trackpad and they computer finally started up as normal. It could be a bluetooth bug.

Do you have any bluetooth connected peripherals?

 

[CopyChief]

My 12" MacBook had a similar rebooting problem right after I installed the public beta. I was able to boot onto the recovery partition and reinstall MacOS. I did not lose any data, and everything works well now.

 

[perquesta]

My MacBook Pro with the public beta kept getting stuck at the Apple logo on bootup. I tried holding "shift" to go into save mode, but that didn't solve it. I then turned off my bluetooth Apple keyboard and trackpad and they computer finally started up as normal. It could be a bluetooth bug.

Do you have any bluetooth connected peripherals?

The only bluetooth peripherals I have are the mouse and keyboard that came with the iMac