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. 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.

Update bootcamp assistant mac