915      iPhone_iPad_Mac_apple

Upgrade problem

I was trying to upgrade from Sierra to High Sierra ,and now all I see is a grey screen.

Anyone has a solution? would be greatly appreciated.

Try booting into Safe mode Use safe mode to isolate issues with your Mac - Apple Support It takes longer so give it time. Once start up is complete just reboot normally.

Will try and let you know . Thanks

最后更新：2017-10-15 22:02:16

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