When I try installing using the recovery partition, I get error "This item is temporarily unavailable, please try again later" from the app store sign in.
Macbook pro os x yosemite download install#
When an install fails (methods 1 and 2 above), it seems to wipe my SSD, but installs the recovery partition for Yosemite/ElCap (whichever I was trying to install).Using the command prompt method of forcing the installer, I get error message "Floating point exception: 8". It may have been corrupted or tampered with during downloading. I tried every method in this thread: This copy of the Install OS X El Capitan application can't be verified. It may have been corrupted or tampered with during downloading". This yields error message "This copy of the Install OS X El Capitan application can't be verified. installing Mavericks, creating USB boot media for Yosemite/ElCap, booting to it.
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installing snow leopard, upgrading to Lion, to Mountain Lion, to Mavericks, then trying to upgrade to Yosemite/ElCap using the upgrade utility (this also reboots the machine, starts the installer, then fails about 80% of the way through.
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