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OSX Mavericks - "An Error occurred while preparing the installation. Try running this application again."

OSX Mavericks - "An Error occurred while preparing the installation. Try running this application again."


I checked and I do have the full Install OS X Mavericks.app - 5.31 GB on my HD under the Applications folder. Running a late 2011 iMAC with 12GB RAM,quad core, etc. I've downloaded the program several times, delete the old file and redownloaded and then attempted to install, but keep getting stuck at this point. Has anyone defeated this error yet?


Thanks!

iMac, Mac OS X (10.7.1)

Posted on Oct 22, 2013 7:37 PM

Reply
80 replies

Sep 21, 2014 9:52 AM in response to Sham-FAAD

I Have iMac 2011 mid.


Today i've added Solid State Drive to it. Now I have original 500gb and SSD 240gb on which i planned to do a clean instal of Os X Yosemite. After completing all the physical installation properly, i restarted the sysem to check if the system recognizes my new SSD. Everything worked well.


Now the problem begins.


By holding option key i get into boot menu to erase both hard drives before installing clean version of os x yosemite.

after erasing the drives im trying to install clean os x, but i get this error that all of you had "An Error occurred while preparing the installation. Try running this application again."


I Tried changing date and time through terminal like some of you advised, also reset the PRAM.


nothing works so far!!!!!(((

Nov 5, 2015 4:34 PM in response to LasdaVegas

This worked great! I'm giving a friend my old 2011 macbook I hadn't used for over a year and *after* I'd already erased the HD, this message came up! But the terminal solution worked perfect! And it makes sense of course. Apple can't verify a computer that thinks it's the year 2000, before the OS you're trying to install even existed lol.

Apr 7, 2016 9:32 PM in response to Romik1988

I installed a brand new SSD into my 2009 mac book pro and attempted to perform an install of El Capitan off of a USB installer that had three partitions (ElCap/Yosemite/Mavericks). Just like everyone above, it went through the entire install process, sat on the zero seconds remaining screen for a bit, and then failed. Just like everyone above, I checked terminal. UNLIKE almost everyone above, my date and time were correct. It failed with El Capitan, with Yosemite, and with Mavericks.


I did find a solution though! I installed 10.8 from another USB installer that I had. That install worked without any problems. Then I used the same USB installer from earlier and upgraded to 10.11 without incident. All of this is a pain in the butt but I thought I would share this here for any others who don't find that the "date" solution works for them.


Be sure to click "This helped me" if it did!

May 31, 2016 11:25 AM in response to r_scheid

I had the same problem, I used the date command to check the date and it was correct! I tried installing again, same problem. On a whim I changed the date to a date in 2014 and of course it did not work. So I changed the date back to the real date and it worked right away.

I hope this helps someone with the same problem!

Thanks

Guy

OSX Mavericks - "An Error occurred while preparing the installation. Try running this application again."

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