Drive 0 Unallocated Space 0.0 Mb 〈Genuine〉

Windows can see the physical device (Drive 0) but cannot read the partition boundaries. Consequently, it defaults to showing zero usable space.

When you reach the "Where do you want to install Windows?" screen, click . drive 0 unallocated space 0.0 mb

The drive’s controller has failed, effectively "locking" the drive or reporting incorrect size data. Windows can see the physical device (Drive 0)