It may have been corrupted or tampered with during downloading.ĭelete this copy of the application, and go to the Purchases page of the Mac App Store to download a new copy." "This copy of the Install OS X Yosemite (or El Capitan) application can't be verified. Now, I've have been trying for a week and a half to get either 10.10 or 10.11 to install and I receive the same message from both: I got internet recovery to work and went back to 10.7.5 that shipped with my 2011 iMac. ![]() ![]() Fast forward to now and the install failed and corrupted not only the HDD but also the installed version of the OS previously (10.11.3). ![]() Was a beta tester for OSX and decided to give macOS a shot when the public beta dropped a few weeks ago.
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