Windows 10 bootcamp on os Sierra (imac mid 2010)

[azuredrake]

I have a mid 2010 imac and want to install windows 10 via a flash drive. (my superdrive is dead) Also, I can't install because of MBR partition. Any way to get around this?

 

[psamo]

You have to restart the mac and go to the setup by pressing command and "X".In the format partition tab, You can format any storage as NTFS.