Error on IOS install from internet recover late 2015 iMac

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Error on IOS install from internet recover late 2015 iMac

I have a late 2015 imac that I'm selling and I erased the drive, via disk utility, but didn't install the IOS before closing disk utility. I've tried installing from an internet disk recvovery, but it keeps erroring out.

I'm able to select the HD, but immediately get a progress bar that's 3/4 full with a message saying more than 2 hours are remaining. It then switched to saying 17 hours remaining and then errored out. I'd really like to avoid paying an apple store to fix the solution since I'm getting very little for this as it is.

I took some screen shots of the disk utility info. I called apple support and they had me do exactly what I'd done on my own and then told me I'd have to go to an apple store to have it fixed.

Any help anyone can offer would be greatly appreciated.

Posted on Oct 14, 2023 12:24 PM

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Answer 1

Top-ranking reply

D.I. Johnson

Level 7

23,945 points

Oct 14, 2023 12:50 PM in response to Tinacvt

When in Disk Utility, please select View > Show All Devices. (It's there at the top of the window).

Then select the top most internal device listed. This will be an Apple device, internal drive.

You need to erase/format that device. Use APFS format and GUID partition scheme.

This will only work if you are booted in Recovery mode.

With that done, quit the Disk Utility and launch the Reinstall macOS app from the Recovery window.

Please see: Reinstall macOS - Apple Support

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Answer 2

Oct 16, 2023 8:21 AM in response to Tinacvt

If you don't click View > Show All Devices then you cannot select the internal drive device and the partition scheme option will not be available.

The OS cannot be installed if the drive is not properly formatted.

Another option might be to select each of those drive volumes - "Untitled" and "HD" - and then click the Volume – button there at the top of the Disk Utility window. Then attempt the erase/format again. Leave alone the Disk Images and the External Time Machine drive. In fact, at this point you should eject the TM drive and set it aside to avoid doing something unintended.

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