Changing disk identifier for fusion drives

[nvrwrkn]

So after going around in circles with Mojave killing my fusion drive I'd like to rebuild and throw bootcamp back on for windows. Problem is my disk identifiers are now backwards on the drive with disk0 being the 1tb drive and disk1 being the 28gb SSD. Wasn't an issue at first making the fusion drive this way but it seems to be messing up throwing windows 10 on in bootcamp because the installer can't find the disk/partition.

I'd like to get it back to disk0 being the 28GB ssd and disk1 being the spinner.

Yes I went back to Sierra to get my fusion drive back. I'm trying to get back to a functioning dual boot config then up it to Mojave. That is unless correcting the identifiers first and then putting Mojave on then boot camp will work as Apple says it's supposed to. 2017 iMac.


Anyone?

 

[Fishrrman]

I'm not an expert on fusion drives.
But I'll take a chance at your question.

Here's what I'd do -- and you'd better be backed up first with a BOOTABLE cloned backup:

First, I'd go back to High Sierra for now, but that's just me.

1. Create a cloned backup of your Mac partition
2. Boot from the cloned backup
3. DE-fuse the fusion drive if you haven't already done so (using terminal).
4. Erase the SSD (just let the empty drive be, for the moment)
5. Erase the HDD
6. Partition the HDD into two "pieces". You want the "second partition" to become the Windows partition
7. Re-erase the "windows partition" to the appropriate Windows format (I don't use Windows)
8. Now, use the terminal to RE-FUSE the SSD and the Mac partition of the HDD into your "new fusion drive"
9. Use CCC to RE-clone the contents of the cloned backup BACK TO the "new fusion drive"
10. Install Windows onto the Windows-formatted partition.

That's my recommendation (at least what I'd try).

Better yet -- unless you absolutely, positively HAVE-TO-HAVE native Windows "bootability", I wouldn't install Windows on a Mac.
I'd use an "emulation solution" instead, such as Parallels, VMWare Fusion, or the free "Virtual Box"...