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So foolishly I fully installed elementary OS over Ubuntu earlier from USB.

The install crashed, and the dialogue box telling me this wouldn't close. I could only get rid of this by unplugging the computer from power.

Now when I power my computer on I get the usual grub menu asking if I would like to try elementary or install etc. but whichever option I choose I just get a black screen.

Is there any way out of this hole I've dug for myself?

I should also mention that the computer is an old iMac.

Any help that will stop me getting fired will be hugely appreciated.

  • Are you looking to reinstall elementary OS, or to restore macOS? Did you try to set up dual boot, to did you try to replace macOS with elementary OS? – Ryan DeBeasi Sep 15 '16 at 15:38
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Learn about boot repair and super grub2 disk, and eventually rescatux. For an old mac I recommand to install rEFIt from mac os X if you still have it.

Can you boot from live usb? If yes I think the best choice for you wood be to format your disk ( Create new GPT partition table, and loose all the data on the computer!) and then clean install elementary os 0.3.2 . If you have 0.3 or 0.3.1 downloaded it is important to download again.

An other thing thing that you can try is pressing alt or C during boot process, you will need a wired keyboard (I think).

I am currently using an old macbook.

  • If you are a new linux user or need more detail post back – Timothée Carel Dec 20 '15 at 1:50

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