no entry sign

Had a perfectly working 10.3.3 system. Updated via App Store. Before rebooting, I updated the APFS.efi file in clover. I don't know what could have happened, but now I can't boot to any macOS system. I have one nvme 960 evo and one 840 evo both with different versions of macOS. None will boot...

Hello together, after writing of my own config.plist (with xcode) and thinning out the standard one which comes with osx installer tool from here, mostly after reboot from my windows drive or when i shutdown and restart the computer, osx stucks with the no entry sign at boot. For any further...

I’d like to ask for some help in bringing my hackintosh back to life. It’s gone, overnight, from working to near perfectly to unable to boot into any of the drives or backups, USBs and clones I have available. At the Clover screen I can choose which drive to boot from but whatever option I try...

Setup: Gigabyte z170MX-Gaming 5 EVGA GeForce GTX 970 Intel i7-6700 Samsung 850 EVO M.2 SSD Team Dark 16gb DDR4 RAM TP Link N900 Wifi PCI Adapter Seasonic 520w PSU A friend of mine with the same build, with the exception of the RAM and PSU used this guide, and had a successful build...

Hello all, I have a Dell Latitude E6220 that I am trying to install El Capitan onto. I have followed the instructions but cannot boot into the USB. It loads about half way before I get the No Entry Sign. I have done the boot using legacy support. Can anyone assist me! I have the I5 2***...

I am new to all of this. Any help would be MUCH appreciated. This is my system: Gigabyte GA-Z97X-UD7-TH Core i7-4790K EVGA GT 740 SC I was trying to fix the audio problem without success, but I think I've tried too many things. So I wanted to start over, now when I try to do a fresh install I...

Hello all, I'm trying to install Snow Leopard on my system but when I put in the Mac OS dvd at the iBoot screen (nothing shows up unless I use GraphicsEnabler = no), the apple logo appears and after a number of seconds and I get the no entry sign (see first picture). I haven't been able to get...