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Late 2011 model, A1278 / 2.4 GHz i5 or 2.8 GHz i7 processor.

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Won’t boot up and shows all errors

After pressing the power button I’m greeted with a greyish blue screen with a circle and a line through it. It then flashes with the apple logo and a folder with a question mark and gets stuck in a flashing loop.

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Is the data on the drive backed up?

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It’s a fresh drive with a version of mavericks on it which isn’t backed up but I’m not bothered about that. @andrewsawesome

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@finleycoombes Press the power button, then immediately start holding Command+R until you see a screen that says "MacOS Utilities". Double-Click "Disk Utility". What partitions do you see?

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500.11gb drive

Jhjg (name of the drive)

SuperDrive

Disk1

Os x base system

@andrewsawesome

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yeah at least the folder with the "?"

Its the drive

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1 Answer

A prohibitory symbol, which looks like a circle with a line or slash through it, means that your startup disk contains a Mac operating system, but it's not a version or build of macOS that your Mac can use.

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finoey coomea will be eternally grateful.
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