Re: How to revert a System labeled/Partitioned Drive to a regular one?
The enumeration of disk 0, 1, 2, etc. doesn't really matter. Sometimes this happens after changes in hard disk controller (see BIOS). But this alone shouldn't alarm you.
The system partition can be different from the boot partition. Again, you need to check your BIOS for related settings. The confusion here might be that the boot partition is actually the partition with Windows, but does not have to contain the boot sector and the boot loader; whereas the system partition on the other hand has the boot sector and the boot loader.
Now, the real issue here is that disk 0, for some odd reason, is recognised as audio. I suspect this has something to do your BIOS settings, but I cannot be sure. Please check and update this thread.