Once you have finished installing Windows you should enable SIP again by following the same steps but run csrutil enable instead. Terminal should display a message that SIP was disabled.At the prompt type exactly the following and then press Return: csrutil disable.From the Utilities menu, select Terminal.Before OS X starts up, hold down Command-R and keep it held down until you see an Apple icon and a progress bar.It is necessary to disable OSX's System Integrity Protection so you can modify the Bootcamp Utility in the next step. This reduces the attack surface for malware that relies on modifying system files by preventing any user, whether with system administrator ('root') privileges or not from modifying a number of operating system directories and files. Step 1: Disable El Capitan's System Integrity ProtectionĮl Capitan ships with a new OS X feature: System Integrity Protection (SIP), also known as 'rootless' mode. 50GB free disk space, 100GB recommended.An ISO containing Windows 10 (I used Windows 10 Enterprise).A mid-2011 iMac or similar running OSX El Capitan.RECOVERY: If you nuke your machine, restore your time machine backup. System and Storage hard drives), and be super careful to not erase the wrong one. Also make note of which drives and partitions remain (e.g. IMPORTANT: Unplug all external and physical hard drives (where possible) that you won't be installing to to avoid accidentally erasing them. it is possible to install Windows 10 on earlier iMacs and it seems to run quite well. If you have multiple internal hard drives, you can select a different hard drive from the one running macOS and create a single partition on that drive to use solely for Windows.How to Install / Bootcamp Windows 10 on a mid-2011 iMac using USBĪpple has released support for bootcamping Windows 10, but only on 2012 Macs and later.

This process may take a long time to complete (you can click the Stop button to interrupt this process).Īt the Create a Partition for Windows step, specify a partition size by dragging the divider between the macOS and Windows partitions. The Windows files are copied to the USB drive. This process may take a long time to complete (you can click the Stop button to skip this process).Īt the Select Tasks step, select all the tasks, then click Continue.Īt the Create Bootable USB Drive for Windows Installation step, choose the Windows ISO image and the USB drive, then click Continue.

Older Time Machine snapshots and cached iCloud files are removed to make space for Boot Camp. The system is checked for total available disk space. On your Mac, open Boot Camp Assistant, located in /Applications/Utilities.Īt the introduction screen, click Continue. Important: If you’re using a Mac notebook computer, connect it to a power source before continuing.Ĭonnect an external USB drive or insert a flash drive into the USB port on your Mac keep it connected or inserted while you install Windows and the Windows support software.

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