Hello,
As far as the time and date issue goes, I had this issue a while back on one of
my Macs when I was trying to reinstall OS X.
What you do is go into Terminal once you load the Utilities screen that first
comes up. Then, you have to go to the Utility menu or something like that and
click Terminal.
Here’s more info:
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:
date
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:
date {month}{day}{hour}{minute}{year}
Every bracket should be replaced with a two-digit number. For example, March
18th 2013 12:50 would become the following command:
date 0318125013
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.
Info taken from:
https://bensmann.no/changing-system-date-from-terminal-os-x-recovery/
<https://bensmann.no/changing-system-date-from-terminal-os-x-recovery/>
I remember when I saw that kind of error. It took me forever and a lot of
research from Google and clicking on many websites to find the solution.
I hope this helps,
Jeffrey
> On Jun 17, 2016, at 9:10 PM, M. Taylor <[email protected]> wrote:
>
> Hello Simon, E.T., et al,
>
> Where is one supposed to change the date. This is to say, can the date be
> changed from within the install interface or must one do it while logged into
> a full OS session.
>
> I am re-downloading El Capitan but was just curious for I did not see
> anywhere from within the install interface through which one may change
> system parameters. The only thing I saw was Terminal.
>
> Again, just curious.
>
> Mark
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Simon Fogarty
> Sent: Friday, June 17, 2016 3:17 PM
> To: [email protected]
> Subject: RE: A Question About Installing El Capitan from a USB Key, I tried
> and Failed
>
> Hi Mark,
>
> I'm not sure how they do it but I don’t believe the machine has to be
> connected to the net.
>
> I know the one I had this issue on wasn't, I had it happen on my own mac book
> air when I blew it away to reinstall.
>
> And on a 24 inch iMac at work that I reimaged and that was using an installer
> that was downloaded from Apple a month previously.
>
> You can do the change of time / date and then install and update and then
> reset your time // date back to the correct settings and it will fix the
> install cert issue, problem then is you only have to re create your installer
> USB.
>
> If you are not already aware,
> When you go to update the os on your machine if you download the installer
> from apple via the updates and then cancel the installation before it starts,
> you will then have the "install OSX el capitan" installer in your
> applications folder, You can then create your usb installation media again,
> I normally set this up with the current and 2 earlier os installer versions
> on a USB that way I've got the older installers if I need them.
> And a fully installed os on the USB as well to allow for other diagnostics.
>
>
> Hope this helps.
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of M. Taylor
> Sent: Saturday, 18 June 2016 7:56 AM
> To: [email protected]
> Subject: RE: A Question About Installing El Capitan from a USB Key, I tried
> and Failed
>
> Hello Simon,
>
> This is extremely helpful.
>
> I will re-download the image and re-create the media.
>
> Question, when I launched the installer, was it connected to the net via
> WiFi? I ask this because I was thinking that it was not, at least, not until
> I attached the Ethernet cable. But now that I think about it, the WiFi could
> have been active.
>
> I wonder what would have happened if I had simply powered down my router
> before launching the installer.
>
> Hmm! Interesting.
>
> Regardless, I will re-image the USB key.
>
> Thank you.
>
> Mark
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Simon Fogarty
> Sent: Friday, June 17, 2016 4:00 AM
> To: [email protected]
> Subject: RE: A Question About Installing El Capitan from a USB Key, I tried
> and Failed
>
> Hi Mark,
>
> Question is when did you create that USB installation media?
>
> Apple have twice in the past 7 months that I can think of,
>
> Re done their certificates for their installation media
>
> Meaning that your installation media is like mine was earlier this year and
> that is somewhat out of date now.
>
> I've had this happen to me also a few months ago and I had 2 options to get
> around the problem.
>
> The first and longer to setup option is on another machine download the
> installation media from apple and recreate your Installer USB device.
>
> The second is possibly shorter but could be more of an issue if your not
> carefull.
>
> That is to set the time and date on your mac back to when you created the usb
> device and then try again to install from your current USB device.
>
> This works according to one of my work colleagues who is a mac specialists
> Once the os is installed, you reset the time to the correct time /date and
> then you should be fine to carry on what you need to do, including
> downloading a new installer image nd then create your OSX Installation USB.
>
>
> Hope that helps.
>
>
> Simon f
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of M. Taylor
> Sent: Friday, 17 June 2016 8:21 PM
> To: [email protected]
> Subject: A Question About Installing El Capitan from a USB Key, I tried and
> Failed
>
> Hello Everyone,
>
> The long and short of it is that for the past 3 releases of OS X, I have made
> USB key installs so, in case of a catastrophe, I could simply insert the USB
> key, launch the install and get back up and running without having to be
> connected to the internet.
>
> Tonight, I decided to perform a fresh install of El Capitan on my 2009
> MacBook Pro.
>
> Before I began, I completely wiped the internal drive of all its partitions
> but, when I tried to install from the USB key, I kept getting an alert that
> the copy of El Capitan could not be verified and the only option I was given
> was to click the OK button, upon so doing, simply took me back to the
> beginning/start screen.
>
> After going through this several times, I attached an Ethernet cable,
> thinking that this would allow the copy to be verified but, no, I kept
> receiving the same alert.
>
> Finally, I gave up and used the Yosemite USB key which did not give me any
> trouble, whatsoever.
>
> Any thoughts on this?
>
> By the way, before I began, I tested El Capitan on this particular computer
> by running a cloned copy of it from one of my USB Thunderbolt drives.
>
> I would hate to think that my El Capitan USB key is useless.
>
> All comments, greatly appreciated.
>
> Thank you,
>
> Mark
>
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