Windows 10 Boot Camp install won't let me install on BOOTCAMP partition on Mac Pro with SSD drive

no, i get the message that i can't install on this partition.

Theres no Options to click, i can click on "format".
Then i geht the Same message.

on this site you can see the supported models Use Windows 10 on your Mac with Boot Camp - Apple Support

Theres no iMac Late 15 5K 27"

But is that really the problem?

thanks

Apple doesn't update their pages much. There are still old boot camp assistant howtos. When I contacted support regarding very same issue, they forwarded my case to technical support over the weekend. Hopefully I'll get response soon. Meanwhile I created bootable Windows 8.1 USB on MBPro mid 2014, El Capitan with same issue. Now I modified bootcamp assitant Info.plist ( Enable Bootcamp to install from usb for OSX 10.9**WORKS** ) and created bootable windows 10 on the same mac I'll be doing install and created partition manually with disk utility.

Its funny that back when i had Mavericks(or Yosemite can't remember) installed on my IMac i had no issues installing Windows 8 on my on my fusion drive.

Bootcamp worked perfect. and i could get Windows install to work

But now with El Capitan i have the same issue as everyone, get same error as madrishmanwhen i try to install Windows 8 or 10 to the partition.

I wrote to apple telling them to fix it. But nothing yet.

Is it possible to post a screen shot of the exact message?

I made a video: Dualboot Mac/windows installation issue all messages are written in quotes in my first post.

Hello,

please watch the video from Plysovej_Katktus.
I have the same Problem.

this is the screen after i format the Bootcamp Partition.

in englisch it means. "can't make a new Partition or find a Partition"

You both have the same exact issue which is very well documented here - Boot Camp: "We couldn't create a new partition or locate an existing one" alert during Windows 8 install - Apple Support . The video shows Drive 1. Drive 1 and all other storage must be disconnected. If you have split the Fusion drive manually, you will have additional issues.

ok, please wait a little time. I Will try this now. thanks if it works !

How would you disconnect fusion's drive swap drive? (drive 1) Fusion drive is hybrid HDD + SSD. Only way which might be an approach is to run diskutil from windows install in commandline and perform installation in comandline. I wouldn't dare, too scared about messing up my mac.

If it is a standard Fusion drive, the Windows installation should be on Drive 1. All other external storage must be disconnected.

BobMcKenzie wrote:

Hello,

please watch the video from Plysovej_Katktus.
I have the same Problem.

this is the screen after i format the Bootcamp Partition.

in englisch it means. "can't make a new Partition or find a Partition"

How do you have a 483Gb Drive 0? Standard Fusion is 120Gb SSD + 1/2/3TB HDD. Please post the output of diskutil list and diskutil cs list from OSX Terminal.

In video, all external drives were disconnected, nothing was connected to usb, not even a mouse nor keyboard. Here is how 2015 mac default drive layout is displayed in windows 10 installation:

/dev/disk0s1: HDD EFI

/dev/disk0s2: Macintosh HDD

/dev/disk0s3: Macintosh Recovery

/dev/disk1s1: SSD EFI

/dev/disk1s2: Swap SSD

/dev/disk1s3: Swap Recovery ?

bootcamp adds 2 more:

/dev/disk0s4: Windows install

/dev/disk0s5: Bootcamp target drive

So there really isn't any external or other drive connected. All is one internal fusion hybrid drive. If you can't see it there your fusion drive can't even work properly. When you delete drive1 partitions, you just stripped yourself from hybrid functionality

Can you post the output of the two Terminal commands I posted earlier?

diskutil list

diskutil cs list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *2.0 TB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_CoreStorage Macintosh HD 1.7 TB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Microsoft Basic Data 323.0 GB disk0s4

/dev/disk1 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *121.3 GB disk1

1: EFI EFI 209.7 MB disk1s1

2: Apple_CoreStorage Macintosh HD 121.0 GB disk1s2

3: Apple_Boot Boot OS X 134.2 MB disk1s3

/dev/disk2 (internal, virtual):

#: TYPE NAME SIZE IDENTIFIER

0: Apple_HFS Macintosh HD +1.8 TB disk2

Logical Volume on disk0s2, disk1s2

7251BE28-63DE-42B8-87A9-41A132B679EC

Unencrypted Fusion Drive

Sorry about the image, didn't find plaintext toggle