The installation for Phoenix OS v3.6.0 (or 3.6.1) based on Android 7.1 for a Virtual Disk (VHD/VMDK) setup typically involves using a Virtual Machine (VM) environment like VMware or VirtualBox. 1.2.6, 1.4.5 Installation via Virtual Machine (VM)

It sounds like you’re referring to a specific story or issue around installing Phoenix OS (a PC-oriented Android OS) that is based on Android 7.1, possibly involving a “360” version (maybe a mod, a build number, or a repack) and VD (likely Virtual Desktop or a virtual disk install method).

Formatting: Format the target partition as EXT4. 1.2.1, 1.4.1

4. Storage Expansion

If your data.img file fills up: