The time estimate can be wildly inaccurate. If you decide the installation will never finish, force the Mac to shut down by holding its power button for a long time (at least ten seconds or so). It may restart with the upgrade completely finished. Or, it might not restart at all. In any event you can't wait forever, so it's not as though you have much choice. Give it a few hours, at least.
Sep 29, 2017 macOS High Sierra update didn’t show up in Mac App Store ‘Updates” tab at all (nor “Purchases”), though Apple had an official news feed stating the update was available as a free update four days ago. Well, Apple wasn’t lying 🙂 It’s just a bit tricky to download High Sierra. I’ll explain the reason why later. First Things First. So you have successfully installed macOS High Sierra, but for some reason, your Mac won’t boot up. You may try to reset NVRAM in this case. NVRAM stands for non-volatile RAM and stores various system settings like time-zone, startup disk selection, kernel panic preferences or display resolution. May 29, 2020 It’s a whole new world. MacOS High Sierra lets developers create interactive virtual reality experiences on Mac for the first time, using the new iMac with Retina 5K display, the new iMac Pro coming in late 2017, or any supported Mac paired with an external GPU.3 With optimized support for Valve’s SteamVR and the HTC Vive VR headset,.
Mac High Sierra Losing Apps Free
High Sierra Mac App Store
As long as you created a Time Machine or equivalent backup according to Apple's upgrade instructions, there is no reason to be concerned about losing any of that Mac's data. If forcing the Mac to shut down results in an inability to boot, then boot macOS Recovery and restore the system from that backup.