Mac OS X 10.8.5 to High Sierra
I have a mid 2012 Macbook Pro, 2.9 GHz Intel core i7, 8 GB 1600 MHz DDR3, that worked perfectly fine, till i decided to reboot my hard drive. I went to disk utility and erased my hard drive. I tried re-installing the Mac OS X High Sierra, it would not let me. When Open "about this mac" under the apple log. It reads "version 10.8.5.", however when i open the software update in app store its told that Mac Sierra has been downloaded. Before the reset it was running in High Sierra.
MacBook Pro, OS X Mountain Lion (10.8.5)