shirishbapu Author

Level 1

4 points

I just erased my hard drive on Imac ( mid 2011). How do I install OS?

Need help on reinstalling os after erasing the HD

iMac 21.5″, macOS 10.13

Posted on Dec 20, 2020 09:51 AM

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66,686 points

Posted on Dec 20, 2020 04:36 PM

If this iMac had macOS 10.12.6 or 10.13 installed at some point, then try booting into Internet Recovery Mode to access the online macOS installer:

https://support.apple.com/kb/HT204904

Otherwise, if you have access to another Mac which is compatible with macOS 10.11 or 10.13, then you can create a bootable macOS USB installer:

https://support.apple.com/en-us/HT201372

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Top-ranking reply

Level 9

66,686 points

Dec 20, 2020 04:36 PM in response to shirishbapu

If this iMac had macOS 10.12.6 or 10.13 installed at some point, then try booting into Internet Recovery Mode to access the online macOS installer:

https://support.apple.com/kb/HT204904

Otherwise, if you have access to another Mac which is compatible with macOS 10.11 or 10.13, then you can create a bootable macOS USB installer:

https://support.apple.com/en-us/HT201372

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I just erased my hard drive on Imac ( mid 2011). How do I install OS?

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