what a mess, it did not work. Erased my flash drive and left me hanging what now?
followed the directions to create installer on flash drive and now have a flash drive that is erased and useless. Why?
iMac Line (2012 and Later)
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Plug in the flash drive, open Disk Utility and reformat the flash drive.
see > https://www.hellotech.com/guide/for/how-to-format-a-hard-drive-for-mac
or > https://support.apple.com/guide/disk-utility/erase-and-reformat-a-storage-device-dskutl14079/mac