I had a weird thing happening after installing Win11 build 22000.51 (which I downloaded as an ISO from UUP DUMP). All of my partitions turned to RAW (4 partitions on 4 different drives).
I could no longer access them, they asked to be formated.
I was talking about things like that when I asked about errors.
Sorry to hear about your partition problems but they sound more like a problem with your ISO rather than your hardware. Generally any time I want to check partitions or disk problems I boot up Linux Mint from a USB, run Gparted and examine/change the partitions using that.
Also, its never a good idea to have more than 1 disk connected anytime you're installing any version of Windows from an ISO. Windows just doesn't like dealing with more than 1 disk until after installation is complete.
And depending on how much stuff you have on your boot drive, its always a good idea to image the drive to external or alternate drive storage before messing with buggy beta software like W11. I've been using Acronis on a regular basis to image my drives since this whole W11 thing started.