#Mac os x lion download dmg install#

Now you are ready to create a bootable USB installer disk using the Install OS X El Capitan.app You want to eventually install El Capitan on, that is for later.) The disk that you are booted to at the time. (If the installation window asks which disk you want to install to, you must pick You will find in your Applications folder, it should be 6.2GBs in size. That and an installation window will open, this does not install El Capitanīut converts the InstallMacOSX.pkg to the Install OS X El Capitan.app which When downloaded open to InstallMacOSX.pkg, double-click on The next section can only be done on a mac that is capable of running El Capitan,Ī mac that came preinstalled with an OS later than El Capitan will refuse to do the next bit.

This downloads InstallMacOSX.dmg to your Downloads folder. Go to Section 4 and click on Download OS X El Capitan.

#Mac os x lion download dmg how to#

How to upgrade to OS X El Capitan – Apple Support (you do not need to reset the date and time for this method) You can download El Capitan with the new certificate from here, Yes El Capitan can be installed on that iMac, you used a USB you already had, but if this had beenĬreated before October 2019, it would fail because the certificate for it has expired, that is mentioned There could be dozens of reasons why it may not work. If I use that to install and turn off Wi-Fi, do you think that will work, or will the install process stil need to use the internet for some kind of validity check? I assume I could then put that on a flash drive.

I have ordered the Lion installer and I'm told I will get it via email in 2-3 days.

Any way to avoid that reverting to today's date?

Her iMac is on a different floor from her router, so I have to use Wi-Fi.

When I tried to install it via USB, I got an error message that I didn't think to write down, but I'm pretty sure that it said this OS couldn't be installed on this computer.

The Apple Support site says that El Capitain can be installed on an early 2009 iMac.

Any reason why your instructions shouldn't work on it? That didn't work either, so I then tried to just reboot without reinstalling, but now, even a straight reboot won't go back to her old Lion OS - it keeps wanting to do an internet install of El Capitain. That didn't work, so I next tried to use an El Capitain installer, which I already had on a USB flash drive. She was having problems with strange things happening on her system, so I thought the best way to fix them was to reinstall Lion, which was what was currently running on her old iMac. I'm actually trying to help a neighbour with this problem, so it will be a couple of days before I can get to her home to try your instructions. If you want more information about that then ask. Your 2019 iMac can install Yosemite or El Capitan which are available as free downloads. If this works then when the OS is installed and booted up you can Open System Preferences> Date & Time If Terminal returns an error saying sudo : command not found, then try again without sudo. Make sure WiFi is switched off, it can reset the date back to today.Įnter a new date, for example or just copy and paste Try this workaround, we are going to set the time and date on your mac to a date previous to the expiry date of the certificates.Ĭonnect your mac to your router via cable, not WiFiīoot to your Recovery HD, click on Utilities in the menubar select Terminal. This may be the problem you are experiencing. The certificates for several of Apples OS's expired in October 2019, Apple have been very poor at getting these updated on their Recovery Servers with valid certificates. If you want to try internet recovery follow this,

#Mac os x lion download dmg code#

You will e-mailed a redeem code which you use in the App Store (not the Apple Online Store).įrom macOS Sierra Apple stopped the Purchased section of the App Store showing previously downloaded

#Mac os x lion download dmg mac os x#

Mac OS X Lion is only available as a $20 from the Apple Online Store (not the App Store) when you purchase