2009 iMac disc not erasing?
hey guys, I am trying to install El Capitan from USB. In the DU, trying to Erase either of the entries in the Internal menu is not working.
Searching the net I found these instructions which sowing using Terminal to run a command to erase the disk: https://www.youtube.com/watch?v=-dQBftQufS4
but not seeing how/where to open terminal, help please?
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