You will need to enter your OSX user account password.

Make a backup of this file by running: sudo cp ist.

The file we are going to edit is the ist file.

Change directory: cd /Applications/Utilities/Boot Camp Assistant.app/Contents.

Open terminal and navigate to /Applications/Utilities/Boot Camp Assistant.app/Contents.

My mid-2011's Model Identifier was 'iMac12,2' and the Boot ROM Version was '23'.

Open Terminal and run system_profiler SPHardwareDataType.

Find out your Macs Model Identifier and Boot ROM Version:.

If you're like me, you haven't touched an optical disk in a few years and prefer the ease and speed of using a USB flash drive instead. Step 2: Modify Bootcamp to allow creation of a bootable USBįor some reason Apple decided that if your Mac has an optical drive, there could be no reason you need to Bootcamp off a USB.

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.

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