Sorry to bother you again but after it downloaded it said "couldn't mount file" do you know why it says that and how to fix that.
I just realized that this not an ISO that you can mount, it is a VHDX.
The image is used to create a new VM with it.
With Windows 11 on ARM Insider Preview builds, you can create 64-bit ARM (ARM64) VMs in Hyper-V on Windows 11 ARM-based PCs. Creating ARM64 VMs is not supported on x64 hardware.
ARM64 VMs are only supported on devices that meet the pre-requisites:
- Windows 11 ARM-based PCs with a Microsoft SQ1, Microsoft SQ2, Qualcomm Snapdragon 8cx, or Qualcomm Snapdragon 850 processor
- Hyper-V enabled (instructions)
Instructions
- Download VHDX file from this page
- Create a virtual machine in Hyper-V, using the downloaded VHDX as an existing virtual hard disk
Visit Windows on ARM developer center at http://aka.ms/winonarm for more details and documentation.