Installing El Capiton on an old Mac Book Pro today, I received the error:
OS X could not be installed on your computer
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Go to Open date & time preferences and uncheck 'set date and time automatically'. Backdate the date & time to the same date and time of your downloaded OSX EL Capitan Installation file. Step 4 reset the automatic date after Installation. It is so silly we have to do this to install an OS! As per this suggestion, I reset my system date via terminal during recovery mode to 1 Aug 2014. This enabled downloading El Capitan for me ( I was only getting option to download Yosemite before resetting the date), and I continued with re-installation wizard. Setting a date near to the date your downloaded the installer, is a solution for fix the message and OS X El Capitan install begin normally and finish ok. – user172064 Feb 20 '16 at 0:42. Hindi Me100% kam karega. 'This copy of the OS X EL Capitan application can't be verified it may have been corrupted'. 'This copy of the OS X Yosemite applic. Setting a date near to the date your downloaded the installer, is a solution for fix the message and OS X El Capitan install begin normally and finish ok. – user172064 Feb 20 '16 at 0:42.
El Capitan Date Install Linux
No packages were eligible for install. Contact the software manufacturer for assistance.
Quit the installer to restart your computer and try again.
I checked Apple’s support Matrix (it is a very old macbook pro) at https://support.apple.com/kb/SP728?locale=en_GB and it was listed as supported.
After lots of Googling and investigation, I discovered that the date and time were not set to current, the macbook thought it was year 2000.
You can easily reset the time and date by following the steps below:
- Click Utilities on the menu bar
- Select Terminal
- Type date
- Confirm the date is wrong
- Type date 062112422016 (example: June 21st 12:42 2016)
- Exit terminal
- Click Restart
Once the Date and time are configured you will be able to install OS X.
Easy fix, for a ridiculous error!
El Capitan Date Install Windows 10
When you’re booting your Mac from the recovery partition and are planning to reinstall OS X, you might be met by the following message:
An error occurred while preparing the installation. Try running again
Now, if you haven’t used your Mac for a while, the error might be caused by an incorrect system date setting. You can check this by going to utilities and opening the terminal. Once in the terminal enter the following command and hit return/enter:
The result of this command will be the date that the system currently has been set to. For some reason, it might have been reset to 2001, in which case we need to set it to the right date. To do this, we enter a new command. This command will be entered as follows:
Every bracket should be replaced with a two-digit number based on UTC time. Below you see what the command should be for your current time and date – . To avoid trouble with timezones, we will use UTC time instead (). Which means, you can just enter it exactly like this:
Enter the command and hit return. You can then check if it was set correctly by running the first command again. If the date was wrong, it was likely that which caused the error, and after you quit the terminal it should be able to install OS X just fine.
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