Install Windows 7 64 21" Late 2015

[Lelloproc]

Hello everbody guys ,
i d need of ours support form my iMac 21 Late 2015 ( 1418 - 2833 )
W need install ( Native Windows 7 64 ) with out Os X only Windows.
But its its not possible wth bootcamb beacuase Apple its terminate support for This SO.
We follow the magic guide of davidcie https://forums.macrumors.com/threads/guide-install-windows-7-on-air-2015.1961618/ but when i boot from the usb doesn t work for my iMac.
The software we need to use and for dental use and doesnt work wth Apple.
We have bouth 4 iMac and we can t refund.
Pls ASAP givme a tip
Thanks so much to all

 

[Lelloproc]

no help guys ?

 

[tyche]

Not sure why you need native install. Maybe try VirtualBox (free) or VMWare Workstation (paid) and run Windows in a virtual session. You can pass through USB devices to the Windows vm and run full screen.

There is also a program called CrossOver which can run lots of Windows software natively in macOS.

Trying to hack your way to installation of bootcamp seems a bad option.