Bootcamp/Win 10 corruption - Macbook Pro 2015 is crashing

I have already tried installing via: USB Catalina Recover Drive, Option+CMD+R and CMD+R. During OS install the SSD (even after being formatted as APFS) does not show.

Comparing my internal Mini HD structure versus the external SSD MBP structure:

• Mini has two "Containers" - one with just drive name the other with drive name - Data.
• The Mini "Data" drive has the following partitions

1: APFS Volume OpusIII - Data 95.4 GB disk1s1

2: APFS Volume Preboot 81.0 MB disk1s2

3: APFS Volume Recovery 528.5 MB disk1s3

4: APFS Volume VM 5.4 GB disk1s4

5: APFS Volume OpusIII 1 1.0 GB disk1s5

• MBP SSD only has one drive name/container - no Data Container.
• Mini Drive name has a "mount point" = /; the Data container has a "mount point" = /System/Volume/Data
• The MBP has a "mount point" = /Volumes/Opusii

I'm confused how MacOS creates volumes. I suppose APFS creates containers instead of partitions. Maybe due to the ease to create additional containers without destroying existing containers as opposed to partitioning???? So when I perform a Erase using Disk Utility using APFS why can't cmd+R see this HD as a candidate for installing the OS on it? I can mount it using target disk mode. I can even see it during initial CMD+R using Disk Utility - but when I attempt to format it fails - then the SDD disappears. What's with the mount point discrepancies? I deduce that / would be where OS is installed and boots from, and the Data container where you store apps/data?

I know a few things:

• I have effectively removed the blue screen of death
• when my MBP boots I see a flashing folder with a question mark - I assume this means - where is my OS?
• Any method tried to install Catalina fails. The SSD is invisible.
• The only way to see SSD is using Target Disk Mode.
• Using Disk Utility to erase and prepare for OS install is a failure.

Either Option/CMD/R or CMD/R does not work.

Sure I know now not to use DiskUtility to remove Windows Partition after the fact, but Bootcamp Assistant didn't allow me to modify/remove the Win Partition. So after removing the Win partition using Disk utility is there any way to undo this win boot issues, or crashing of OSX? It would seem maybe Apple would allow for a cleanup process after a Bootcamp/Win corruption????? I mean I literally deleted the Win partition - why does my Mac still think there is a Win install - why do i get blue screen, and why is my Mac crashing on the OSX side because of this Bootcamp issue?

Is there any other way to repair OSX or perform an erase/reinstall of Catalina?

As for Time Machine - I did setup a session, and i believe I backed everything up, but then stopped. I tried to recover from the previous TM backup, but doesn't TM just allow for single file recovery???? I mean can I just say - give me the entire HD from a month back? Would that have solved this issue?

Thanks

Well this has gone from worse to worser.

Yes I have a Mac Mini. I found Target Disk Mode and decided to attach Mac Mini to MacBook Pro (2015). I copied important files from MBP to Mac Mini. So I figured heck I'll use Disk Utility to completely erase my MBP and then install Catalina fresh. HAHAHAHAHAHAHAH fail.

So initially it said that the MDP had to have been formatted using GRIB partition (or whatever the requirement is). So I decide to do a CMD+R and the recovery menu came up. So I figured heck I'll install macOS Catalina. It failed couldn't find the MBP HD. So I decide to use Disk Utility to format MBP. I used Mac OS Extended (journaled) (or whatever), and tried again. My MBP HD does not show up!!!!!!!!!!! I even tried using Restore from Time Machine Backup hoping this would help (I did a TM backup in April) - couldn't find MBP HD. So I figured I would create a Restore USB Thumdrive. Went through the whole procedure. Booted from USB. Tried Disk Utility - No MBP HD!!!!!

Loner T thanks fro trying to help me. Here are my thoughts:

• I'm starting for the first time in 33 years to really hate Macvbook Pro, or is it macOS, or is it Bootcamp. I've always hated Windows so to think that Windows took my Mac done is a fitting and painful thought.
• This should be easy for Mac. It's been a nightmare. Come on - I tried BCA - fail, tried option+cmd+r, and cmd+r - failed, Tried target disk - format - failed. Tried repair USB drive - failed.
• If I let my MBP perform a boot up without holding option key I get the blue screen of death. WHERE THE **** IS THIS COMING FROM!!!!!! I deleted portion, I formatted HD, now HD is missing, and yet blue screen of death still haunts me!

Loner T:

• Please help me! what more can I do? How the **** is Windows or blue screen of death still haunting me. How do I completely erase my MBP HD, and reinstall Catalina???? What more can I do? Apple Genius Bars are not open in PA (not yet), and a local Apple Service Center would charge me minimum $200. I have no confidence they are going to solve my problem since I've tried everything. Does Apple have better tools then what's available to the general public? Do I have to throw away my $1,400 MBP due to fracking bootcamp screwup??

Please help me!!!!!!

So I did SMC and NVRAM as you requested. So when I try to reboot the Blue Screen of Death does not show. Though I get a Folder with a question mark. It blinks on and off. So clearly MBP cannot find an OS to startup with. Okay now I want to install Catalina! HOW DO I DO THIS?

Loner T I do not know if you are Apple employee, or just someone who likes to help. Id there anyway I can get this elevated upward to Apple????

After doing SMC and NRAM, and holding CMD-R I still don't see SSD. And if I try to instal macOS it choose OS X Mavericks??????

When I select Disk Utility I do see SSD. I didn't chose to erase, but instead try to at least install Mavericks. No HD to install. Go back to Disk Utility and the internal SSD disappears!!!!!!!!!! WTHECK.

I have to see if I can still do target from mini to mbp

the mini was upgraded to Catalina before connecting to mbp

also I performed diagnostics while on apple support call (before trying to format MBP he)

ive seen a number of issues with sad hd not being seen online. One person said they solved the problem by naming the had. Crazy stuff.

I tried again using cmd+R. It initially see the SSD HD. When I try to erase it spins a bit then fails to erase. The SSD HD then disappears from HD list.

I then connected MBP to Mini using Target Mode. The SSD HD shows up. When I get info on Untitled it says this:

I then ran the terminal command you requested and got this:

So I can use SSD HD as a Target - it is sometimes shown in CMD+R but cannot be formatted giving me an error. How do I recover from this Loner T? It would seems easy - open Disk Utility - select SSD and format. Then boot up using my Repair Catalina USB, and install Catalina. What is preventing me from doing this easy task?

Thanks

So I'm impatient. I launched Disk Utility on Mini. The SSD showed up. I chose Erase and selected APFS, made sure GUID_Partition scheme was selected, and named it OpusII. Here is the result:

I guess I'm confused how Apple formats HD.s What is "Container disk?"? Also Why is there OpusII and OpusIII Data for the Mini. I believe this is how my previous incaranation of the MBP SSD was set up as well.

I'll wait for your response to my previous posts, but I'm also going to try one more time performing USB Catalina install.

Here is test output:

Last login: Sun Jun 7 14:52:24 on console

The default interactive shell is now zsh.

To update your account to use zsh, please run `chsh -s /bin/zsh`.

For more details, please visit https://support.apple.com/kb/HT208050.

Geralds-Mini:~ geraldohara$ diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_APFS Container disk1 1000.0 GB disk0s2

/dev/disk1 (synthesized):

#: TYPE NAME SIZE IDENTIFIER

0: APFS Container Scheme - +1000.0 GB disk1

Physical Store disk0s2

1: APFS Volume OpusIII - Data 95.4 GB disk1s1

2: APFS Volume Preboot 81.0 MB disk1s2

3: APFS Volume Recovery 528.5 MB disk1s3

4: APFS Volume VM 5.4 GB disk1s4

5: APFS Volume OpusIII 11.0 GB disk1s5

/dev/disk2 (external):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme 1.0 TB disk2

1: EFI EFI 209.7 MB disk2s1

2: Apple_HFS Untitled 1.0 TB disk2s2

Geralds-Mini:~ geraldohara$