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原帖由: Pat ,

标题:

Fresh Install of El Capitan

文本:

I have an iMac that I inherited from the previous IT director. I’ve searched all over Google and spoken with Apple support, but I cannot upgrade from Yosemite to El Capitan. I need to be on El Capitan so that I can use an app that is required for my job. I have a USB set to boot from, but the Mac will not see it, if I try to boot from it.

Any help would be greatly appreciated.

设备:

iMac Intel 27" EMC 2390

状态:

open