원문 게시자: Edward C ,
''It's not chiming, I give up'' Well how can we comment on your purchase choices! - See here: http://www.idownloadblog.com/2015/09/14/how-to-start-up-mac-from-bootable-media/ Step 1: Turn on your Mac by pressing the power button by choosing Restart in the Apple menu, or restart it if it’s already on. Step 2: Press and hold the Option (⌥) key immediately upon hearing the startup chime. Release the key after Startup Manager appears. Startup Manager will scan and list connected drives and volumes that can be booted from, as shown below.