Catalina boot camp with iMAC 27 Fusion drive

Here are my full system specs:

iMac (Retina 5K, 27-inch, 2017)

4.2 GHz Quad-Core Intel Core i7

40 GB 2400 MHz DDR4

Radeon Pro 580 8 GB

Radeon Pro 580

Driver date: 2017-01-18

Driver Version: 21.19.512.1

machaldriver.sys

I was unable to find this in device manager, but i did find the file under c/windows/system32/drivers.

couldn't find a version #, but the date modified was 2017-03-28

diskutil apfs list

screenshot attached

Thanks a million

2017 iMac 27"

with 3TB Fusion drive

Did a full reformat yesterday and bypassed the issue of bootcamp getting stuck. Now the original problem persists.

Installs windows fine, continued with boot camp and Broadcom installs within. I can even install third party software and use them, but upon restart, the spinning wheel freezes and eventually gives you a blue screen. I cant get back into windows again without deleting the partition only to start the doomed process again.

here are the readouts.

/dev/disk0 (internal, physical):

  #:            TYPE NAME          SIZE    IDENTIFIER

  0:   GUID_partition_scheme            *121.3 GB  disk0

  1:            EFI EFI           314.6 MB  disk0s1

  2:         Apple_APFS Container disk2     121.0 GB  disk0s2

/dev/disk1 (internal, physical):

  #:            TYPE NAME          SIZE    IDENTIFIER

  0:   GUID_partition_scheme            *3.0 TB   disk1

  1:            EFI EFI           209.7 MB  disk1s1

  2:         Apple_APFS Container disk2     2.6 TB   disk1s2

  3:    Microsoft Basic Data BOOTCAMP        370.4 GB  disk1s4

/dev/disk2 (synthesized):

  #:            TYPE NAME          SIZE    IDENTIFIER

  0:   APFS Container Scheme -           +2.8 TB   disk2

                 Physical Stores disk0s2, disk1s2

  1:        APFS Volume Mac HD - Data      894.1 GB  disk2s1

  2:        APFS Volume Preboot         82.5 MB  disk2s2

  3:        APFS Volume Recovery        526.6 MB  disk2s3

  4:        APFS Volume VM           2.1 GB   disk2s4

  5:        APFS Volume Mac HD         10.8 GB  disk2s5

Have tried with 1607 X64, 1903_x64 and 1909_x64.

All exactly the same problem which had never occurred prior to upgrading to Catalina.

an endless cycle of freezes and reboots with a BSoD ending.

Can't believe my 2.5 year old top of the line iMac is "older" now haha.

There must be something that we're missing as i cant find anyone else with this problem.

The OSX side functions flawlessly.

I'd rather fix the problem or wait for a bootcamp update to be honest.

I just find it odd that no one else has been having this issue considering how many of my model of iMac have been sold.

Thanks for trying anyhow. I appreciate the help.

Writing from fully functioning bootcamp.

While I had disconnected all my external storage devices, I still had a pair of HyperX headphones plugged in.

Surprisingly that was the issue. Months of head scratching over a pair of headphones.

Nice job Loner T, we got it done.

For APFS list this site is telling me: You have included content in your post that is not permitted.

can't figure out what to remove to make it postable.