The install of El Capitan, at least what I thought was the installation, took a while. A screen shows up with the 10.11 logo stating to install click continue, agree to terms and install OS, I got the option to use disk utility, time machine or recovery or click the install button. I clicked, installation (from bootable flash drive) it stated to restart, with this done a message came that there was installation media on the destination volume, try again.
I restarted and got a progress bar (Apple logo above) which never fully finished, or it did but nothing happened. After walking away for an hour or two, I powered the machine down, restarted it with the option button to get the start up disk manager but only got the apple logo and progress bar, again. I tried to start in recovery mode, also in safe mode with the progress bar appearing after each attempt.
Obviously, I cannot access the drive to remove whatever install media is present on that disk. What options do I have at this point?
Thank you
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“This copy of the Install OS X Mavericks application can’t be verified. It may have been corrupted or tampered with during downloading”
Download El Capitan and install fresh the Mac OS without upgrading the current Mac OS version The second method of installation is the clean install method. Etabs 2015 activation key free. It basically erases the entire content of your chosen drive and installs a fresh, smooth version of the new operating system which is downloaded El Capitan Mac OS X in this case. 'OS X can’t be installed on “Macintosh HD” because the version of macOS is too new.' So just to confirm, I cant reinstall a Yosemite system and acquire el capitan installer through the appstore and then create a usb bootable with el capitan?
OS X El Capitan won't install on these two MacBook Pros (8,1). Let's find out!Support the show and get in the credits http://Patreon.com/KrazyKenWant. I can not move forward with the installation of El Capitan. This message keeps showing up reading 'OS X cannot be installed on Macintosh HD' Is there just not enough storage on my hard drive? I'm at 30.6 free GB out of 249.77 GB. I have a MacBook Air mid 2011. Processor 1.7 GHz Intel Core i5. Memory 4GB 1333 MHz DDR3.
The reason why this insane message is happening is because as of February 2016, the security certificates that validate these Mac OS X installs seems to have expired. What this means is that when you try to install Mac OS X Mavericks, Yosemite or El Capitan from any USB or external source, the certificate checking process will render your copy of the installer null and void. You will then get the error “This copy of the Install OS X Mavericks application can’t be verified. It may have been corrupted or tampered with during downloading.”
Thankfully, as annoying as this is, there’s a pretty easy fix in the Terminal, located on every installer of Mac OS X. Here’s what to do:
- Boot into the OS X installer as you would normally do (hold down option at boot and choose your installer
- Disconnect the ethernet cable if it’s connected and turn off wi-fi from the networking menu
- Open the utilities menu item and choose “Terminal”
- When the Terminal appears, simply type in the following command: date 0202020216
- Hit return and you will now see the new date as read back by the system
- Quit the Terminal
- You can now begin to reinstall OS X from the main screen as you did before
Why does this work in the Mac OS X Terminal?
Download Os X El Capitan Iso
The reason why this works is that you are actually turning your computer into a time machine–and you are telling it to go back to the date February 2nd, 2016. This tricks the certificate into believing that the date is now in the past and allows the installation to resume. You can also redownload any installers to get the new certificates, which are located in your purchase history on the Mac App Store. Gundam getamped skin. You would then have to make new installer disks with these new downloaded installers.