Throughout 2012 mannequin yr, Apple began transport iMacs with out Optical drives. Additionally, Apple began transitioning to (U)EFI booting of Home windows. Nevertheless, your Mac was designed to legacy BIOS boot all Home windows installations.
Word: This technique of set up could require short-term use of a wired keyboard and/or wired mouse.
Use macOS Catalina to create a Home windows 10 set up flash drive.
To check this reply, the Home windows 10 iso file Win10_22H2_English_x64v1.iso was downloaded from this Microsoft web site. For a Late 2012 iMac, the Home windows 10 set up disk could be created by the Boot Camp Assistant. Under is a snapshot of contents of this flash drive.
Create a partition for the second Home windows set up.
When testing, the Disk Utility software included with Catalina (macOS 10.15.7) had an inclination to fail, when trying to shrink the Apple_APFS partition and add a brand new ExFAT formatted Microsoft Primary Knowledge partition. Due to this fact, this reply recommends utilizing the diskutil command to perform this process. For instance, to shrink a 499.0 GB Apple_APFS partition to roughly 300 GB and make a brand new Home windows named partition of about 199 GB, the next command would should be entered.
diskutil apfs resizecontainer disk0s2 300G exfat Home windows 0
Word: This command will depart disk0 hybrid partitioned.
Make Home windows the default as well and boot to Home windows.
This may be performed by both of two methods given under.
- From the Startup Disk pane of the System Preferences software.
- By holding down the management key whereas choosing
Home windowsfrom the Mac Startup Supervisor.
BIOS boot from the flash drive.
Restart the Mac, then maintain down the choice key till the Mac Startup Supervisor icons seem. Boot from the flash drive by choosing the exterior (or flash) drive icon labeled Home windows.
Set up Home windows 10.
Proceed with the set up till a show just like the one proven under seems.
- Choose the partition named
Drive 0 Partition 3: Home windows. - Format the partition. The Home windows label might be eliminated. The show ought to now seem just like the one proven under.
- Procced with the set up of Home windows to this partition.
