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petercw2

macrumors regular
Original poster
Mar 1, 2003
142
15
Because of all the bugs 10.14 was giving my iMac I decided to downgrade to 10.13.
Using a bootable install of 10.13 the install had begun, got half way through and the computer bonked. I rebooted and now the drive cannot be seen either by the installer or the recovery disc utility. Not sure what to do at this point and I'd REALLY like to avoid the Genius Bar. thanks in advance for any help.
 
Boot from the bootable USB installer again.

Open Disk Utility.
Look towards the upper left.
There's a popup menu with the choice to "show all devices".
Have you chosen that FIRST, and then tried erasing the internal drive?
 
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