I cannot install BOOT CAMP on my Mac Pro (2009)

Sorry Loner T, you just got me on CoreStorage (I have no idea what is this - my limitation of knowledge). Let me explain what I did so far:

Created partition with 900G, then created another partition with 999G. So remaining is for MacOS (2T).

Then before I tried t install the Windows, I tried the BC Assistant again (it show only the option to remove Windows 7 or 8 - obviously I did not remove it). Then looking to one of your previous post, I used the f disk and g disk recommendations. Ok, I got it thru. on Sudu fdisk /dev/disk0 shows 4 entities, with 1, 2 (with *) and 3 and 4 with 0s. Tried to start with my Windows 7 DVD startup disk, then it did not come up just told me to "click any key to startup from DVD/CD....." my keyboard was not working, rebooted the machine again. Then I went to DiskUtility again and erased the both Windows partition as MS-DOS and tried the Windows 7 DVD again, and same message: "click any key to startup from DVD/CD..." and my keyboard was still frozen. Rebooted the machine again and now I am here completely stuck. I know there must be something small that I am missing all of this, but can't figure it out (even the CSRutil I was able to disable prior using the F/Gdisk).

If it is not too much, could you please guide me on every step of the way? I only need between 0.7~1T for Windows at most anyways.

Thanks.

Yes. DVD is readable.

Yes. GPU is the original (ATI Radeon HD 5770)

Yes. I see the CD/DVD.

I had just cleaned the hardrive again without any partitions.

My next step:

create partition 1: 1T

create partition 2: 1T.

Lake-Nona-Mac-Pro:~ lakenonapowermac$ diskutil partitionDisk disk0 4 GPT FAT EFI 200MiB EXFAT WINDOWS 999GiB %Apple_Boot% "Recovery HD" 650MB jhfs+ "Macintosh HD" R

FAT does not appear to be a valid file system format or partition type

Use diskutil listFilesystems to view a list of supported file systems

Lake-Nona-Mac-Pro:~ lakenonapowermac$ diskutil list

/dev/disk0 (internal, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *4.0 TB     disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:                  Apple_HFS Macintosh HD            3.0 TB     disk0s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

   4:                  Apple_HFS Untitled                999.2 GB   disk0s4

Lake-Nona-Mac-Pro:~ lakenonapowermac$ 

OBS: I did not erase the 1T partition for FAT32 yet

Error at the end about mounting:

Lake-Nona-Mac-Pro:~ lakenonapowermac$ diskutil partitionDisk disk0 4 GPT fat32 EFI 200MiB exFAT WINDOWS 999GiB %Apple_Boot% "Recovery HD" 650MB jhfs+ "Macintosh HD" R

Started partitioning on disk0

Unmounting disk

Error: -69888: Couldn't unmount disk

Lake-Nona-Mac-Pro:~ lakenonapowermac$ 

diskutil info /

   Device Identifier:        disk0s2

   Device Node:              /dev/disk0s2

   Whole:                    No

   Part of Whole:            disk0

   Volume Name:              Macintosh HD

   Mounted:                  Yes

   Mount Point:              /

   Partition Type:           Apple_HFS

   File System Personality:  Journaled HFS+

   Type (Bundle):            hfs

   Name (User Visible):      Mac OS Extended (Journaled)

   Journal:                  Journal size 311296 KB at offset 0x3a3a000

   Owners:                   Enabled

   OS Can Be Installed:      Yes

   Booter Disk:              disk0s3

   Recovery Disk:            disk0s3

   Media Type:               Generic

   Protocol:                 SATA

   SMART Status:             Verified

   Volume UUID:              BD502E2D-5958-33FE-9F21-699573F3D2E0

   Disk / Partition UUID:    5F4855BA-0957-45C5-808B-6D3DC05BC310

   Partition Offset:         209735680 Bytes (409640 512-Byte-Device-Blocks)

   Disk Size:                3.0 TB (3001577267200 Bytes) (exactly 5862455600 512-Byte-Units)

   Device Block Size:        512 Bytes

   Volume Total Space:       3.0 TB (3001577267200 Bytes) (exactly 5862455600 512-Byte-Units)

   Volume Used Space:        73.5 GB (73505923072 Bytes) (exactly 143566256 512-Byte-Units) (2.4%)

   Volume Free Space:        2.9 TB (2928071344128 Bytes) (exactly 5718889344 512-Byte-Units) (97.6%)

   Allocation Block Size:    8192 Bytes

   Read-Only Media:          No

   Read-Only Volume:         No

   Device Location:          Internal

   Removable Media:          Fixed

   Solid State:              No

   Hardware AES Support:     No

   Device Location:          "Bay 1"

This is the only disk in MC.

The interesting thing is when I partitioned the hard drive in 3 parts before, I was able to at least boot from the Windows DVD and format the partition that I want to install, but then the Windows installation stops.

Also in the last command the partition that I created for the bootcamp (999GiB), this partition does not show up anymore. So, it was unmounted (at least shows that way in the Disk Utility).

Sorry for the misunderstanding. Partition 1: as "Windows", correct? And MBR (???) Master Boot Record, how?

Or the MacOS partition as 1T? and the rest on 3T?

I will need to get one. Is that possible to use as Windows instead? and how big? 1T?

If I go to the first option (macOS on external disk), how do I rebuild the 4T to run both?