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crwdns2933797:0Arthur Shicrwdnd2933797:0crwdne2933797:0
crwdns2936043:0crwdne2936043:0 crwdns2933505:0crwdne2933505:0 Arthur Shi
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| + | [* black] With the device powered off, disconnect any external hard drives and flash drives. |
|---|---|
| + | [* black] Plug in your [guide|66371|iOS High Sierra bootable flash drive]. |
| + | [* black] Hold down the ***[option]*** or ***[alt] (⌥)*** key on the keyboard and power on the device. |
| + | [* black] When you see the boot selection screen as shown, release the ***[option]*** key. |
| + | [* red] Use either the keyboard's arrow keys or the mouse to select "Install MacOS High Sierra." Press ***[enter]*** or click your selection with the mouse. |
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