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Problem upgrading Mac Pro to macOS High Sierra

F

Fcis

macrumors member
Original poster
Jun 23, 2020
73
5
I have macOS El Capitan on my Mac Pro and I am trying to update my Mac Pro to macOS High Sierra so I can update it to Mojave later since Mojave requires to have at least macOS High Sierra. But when I run the installer I get the below error. Any advice on the steps needed to overcome this issue?

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This is my Mac Pro specs:

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This is my disks in Disk utility:

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