Yes, you can boot a Red Hat Linux operating system from a Hyper-V Generation 1 virtual hard disk using the legacy MBR boot mode. Hyper-V generation 1 VMs support the legacy BIOS boot mode, enabling you to install and run Linux distributions like Red Hat using the MBR partitioning scheme. This allows you to create and configure a virtual machine that uses a Gen.1 VHD with Red Hat Linux, providing compatibility with older systems and ensuring successful booting in a Hyper-V environment. I hope the information may helps you.
