Dec 16, 2019

Aug 17, 2018 This copy of the Install OS X El Capitan application can't Macbook Pro 13" 2015 with OS X Yosemite on board. I've been trying to install OS X El Capitan, but always get the following message: "This copy of the Install OS X El Capitan application can't be verified. It may have been corrupted or tampered with during downloading." By the way this is not a date time issue, date is correct on my computer. Trying to install os s but it says os x cannot be installed… Jan 04, 2017 Snow Leopard won't install, says "this disk cannot be used Jul 18, 2012

Selecting the disk tells me 'Mac OS X cannot be installed on Macintosh HD, because this disk cannot be used to start up your computer.' Rebooting and attempting an install direct from CD yields

Oct 01, 2015 · As with prior versions of OS X, the new version 10.11 “El Capitan” is available as a free purchase from the App Store, and should then download and run to allow you to upgrade your system. If all goes well, you should see the OS X installation window that instructs you to begin the upgrade process, but there may be instances where this does

One more thing, yesterday when I start the internet recovery. The recovery gave me error, saying that I cannot download the operation systems because my MacBook has newer OS X. So I use the Disk utility to erase the MacBook hard drive. before download the software from internet. Thanks

Aug 17, 2018 This copy of the Install OS X El Capitan application can't Macbook Pro 13" 2015 with OS X Yosemite on board. I've been trying to install OS X El Capitan, but always get the following message: "This copy of the Install OS X El Capitan application can't be verified. It may have been corrupted or tampered with during downloading." By the way this is not a date time issue, date is correct on my computer. Trying to install os s but it says os x cannot be installed… Jan 04, 2017