installing windows 8.1 on new mac pro (late 2013)

Windows 8.1 is not yet supported by Boot Canp. Do not use Disk Utility to partition for Windows. Use Boot Camp Assistant.

I've tried to use refit1.04 to boot the w8,problem stills!

You are not alone. I'm getting the exact same error as you and I've tried every combination I can think of to no avail. I'm probably just going to buy an old Win 8 DVD and upgrade it to 8.1 if I manage to get it to install.

Use the USB method to install windows 8.1

Make bootable usb of the windows DVD using disk utility, then try to install it.

I've tried making a bootable USB drive and I get the same error.

I have the same problem with my brand new MacPro (6-Core, D700, 1tb SSD)

I have called Apple support to report this issue, in the mean time I've done the following tests:

Windows 7/8 tests NO Joy...

I have also tried tricking the windows 8 installer by doing the following.

1)Boot of Windows 8 installation (USB)

2)At the setup screen it will ask you to format your boot camp created drive to NTFS so that windows can be installed.

After the formatting is done and windows is ready to install i swap the Windows 8 USB stick for a Windows 7 USB stick then I click on next.

3)Windows starts copying the files just like it did on the Windows 8 installation and I get the same error.

"Can't update boot configuration"

I guess it has nothing to do with the Windows USB Stick since I've tried installing Win 7/8 and 8.1 with the exact same error.

I have not received any news from Apple support on this issue.

Any other ideas or suggestions ?

Thanks!

I followed the instructions here to the letter and installed Windows 8.1 on an external drive with my 2012 rMBP. I let the Windows installation finish but I didn't run Windows Update and I didn't install the Boot Camp drivers. Instead, I then moved the external drive from my MBP to my new Mac Pro and completed the Windows installation, including the Boot Camp drivers and Windows Update. It worked great.

You don't wind up using Boot Camp for anything other than the Boot Camp drivers and you're not forced to keeping you Windows installation on an internal drive. I was having the same exact issues as others trying to get Windows installed on my nMP with Boot Camp but I've found that this workaround is actually a better solution in my case since I really didn't want to share my internal 512GB SSD with Windows anyway.

I am having similar problems with my MacPro (late 2013).

The installer always fails to find a GPT partition and tells me the drive is MBR partitioned.

I have used diskutility to manually remove the bootcamp partition and replace it with an ExFat partition - no change.

I have purchased Paragon and used diskutility to replace the bootcamp partition with a new NTFS formatted partition. But the 8.1 installer STILL tells me the partition is not GPT and refuses to continue.

I have tried booting from both a USB drive and from a genuine Win 8.1 install DVD.

Is there really no way to do this other than setting up an external drive ?

Same problem here. I've got a 12core d700 1tb and think I've tried just about every supposed solution out there. Have you guys had any luck yet? I've been stuck in this for about 2weeks with no workable solutions from apple so far.

Thanks

Spencer

Try this

Run boot camp assistant to remove the bootcamp partition then restart the machine and login

Restart the machine again but this time do a PRAM reset then login

Open disk utility, confirm your boot drive is just 1 Mac journaled partition and repair permissions

Run repair permissions a 2nd time, this time you may have only a few prompts

Try boot camp assistant again

I had the same issue, I did everything above plus one more step, which was to clean install OSX via internet recovery as my very first step. This takes much longer but I have a feeling that reinstalling mavericks is not necessary so let me know how this goes

you try to use source win7 pro x64 of me http://www.fshare.vn/folder/TAHKDDSKMT/ , it will solve your problem

I have the same issue, has anyone else had success with TekAzurik's solution?

see my posts 4 earlier, it works everytime if followed exactly