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Upgrade to High Sierra failed

I

iMac2013Rosa

macrumors newbie
Original poster
Nov 20, 2017
1
0
I tried to upgrade to High Sierra, but apparently it failed. Now my Mac only turns on to the Mac OS utility screen. When I try to install the OS from the it says my disk is locked. I’ve tries starting from the internet recovery, but when I do that it still does not work ( gives me no option to select a drive)

I would really try to avoid having to erase my entire drive. Please, help :(
 
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