Оригинальный сообщение: rama dhan ,
I was get it too, after instaling high sierra from elcapitan on my macbook pro early 2011 with HDD. After download and instaling success the system require to reboot. After reboot and apple logo loading bar, it stucked in whitescreen. Any shortcut didnt give me good news. I cant access disk utility, internet recovery, recovery volume, usb osx instaler for downgrade and reinstal, etc. High sierra made my mac broken. Hate it !. When i click power + option only show macOs instaler volume.