Hi Stephen, NEVER & I repeat NEVER attempt a macOS Upgrade or Update installation without being connected to power! The same applies when doing a iOS update install.
Ronni Brown’s iPad Pro 12.9-inch 256GB > On 26 Jul 2018, at 10:26 pm, Stephen Chape <chap...@bigpond.com> wrote: > > Thank you Ronni. > I found a solution online which seems to have worked. > She has taken her MacBook Air home now and has started it and is now charging > it. > > Problem was it would not even start. > She did not bring her Mag Power Cable with her. > So I printed instructions for her and sent her home to carry them out. > > I have a suspicion that it was simply out of power ! > > >> On 26 Jul 2018, at 10:09 pm, Ronni Brown <ro...@mac.com> wrote: >> >> Hi Stephen, >> >> Without knowing what preparation was preformed and a backup done prior to >> attempting the upgrade. >> The only thing I can suggest is to perhaps try this: >> >> 1. Turn on your Mac, then immediately hold down Option- Command-R to boot >> into macOS Recovery, and reinstall the operating system. >> By using Option-Command-R will Upgrade to the latest macOS that is >> compatible with your Mac.** >> >> 2. Release the keys when you see the Apple Logo or a spinning globe >> >> 3. When you see the macOS utilities window, continue to the next section to >> determine whether to erase your startup disk or begin installing macOS. >> >> 4. Choose Reinstall macOS from the utilities window. >> >> 5. Click Continue, then follow the onscreen instructions. You'll be asked to >> select your disk. If you don't see it, click Show All Disks. >> >> 6. Click Install. >> Your Mac restarts after installation is complete. >> >> Cheers, >> Ronni >> >> 13-inch MacBook Air (April 2014) >> 1.7GHz Dual-Core Intel Core i7, Turbo Boost to 3.3GHz >> 8GB 1600MHz LPDDR3 SDRAM >> 512GB PCIe-based Flash Storage >> >> macOS High Sierra 10.13.6 >> >>> On 26 Jul 2018, at 5:06 pm, Stephen Chape <chap...@bigpond.com> wrote: >>> >>> Hi folks. >>> >>> A friend of mine has a 2016 MacBook. >>> She has today upgraded to the latest MacOS. >>> Unfortunately I do not know which OS was previously on it. >>> >>> She tells me that when she starts up she gets a continuous black screen. >>> But she can hear activity happening. >>> I advised her to start up in Safe Mode, but the result was the same. >>> >>> She is coming to visit me at 6:30 tonight. >>> Has anyone any ideas how we might resolve this please ? >>> >>> Regards, >>> Stephen Chape >>> >>> > >
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