Before you try to install a new version of macOS But it can quickly become frustrating if, instead of being presented with a brand new Mac, ready to use, you see an error message like “macOS could not be installed on your computer.” Fortunately, you can do lots of things to fix the problem, so let’s get started. But to help you do it all by yourself, we’ve gathered our best ideas and solutions below.įeatures described in this article refer to the MacPaw site version of CleanMyMac X.Ī new version of macOS is always exciting. Set “Video memory” to 128MB or above.So here’s a tip for you: Download CleanMyMac to quickly solve some of the issues mentioned in this article. Set “Memory” to 2048MB or above.Ĭlick the “Video” item. Choose the DMG you created in the last set of stepsĬlick the “CPU & Memory” item.
In the “Connect to:” dropdown, select “Choose an image file…”. Unselect “Web cameras” and “USB 3.0 support” (failing to do so will result in a kernel panic when trying to run the installer)Ĭlick the “CD/DVD 1” item. Click “OK”Ĭlick the “USB & Bluetooth” item. Select 32GB or above for the size of the disk and unselect “Expanding disk”. Press the “+” button, then select “Hard Disk”
In the configuration window, click the “Hardware” tabĬlick the “Hard Disk 1” item, then click the “-“ button to remove it Make sure "Customize settings before installation" is ticked, then click "Continue" Tick "Continue without a source", then click "Continue" Once installed, run the following command to create a boot-modified OS X installer: iesd -i -o -t BaseSystemĬlick "Install Windows or another OS from a DVD or image file", then click "Continue" I would recommend setting the correct permissions on the required folder(s) instead.) Install iESD using the command "gem install iesd" (You might need to "sudo" this command depending on the write permissions you have set up. Make sure you have a legal copy of OS X 10.11 from the Mac App Store before doing this. Just spent a bit of time searching and hacking away (credits to for the modified installer technique).
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