MacBook Pro Bootcamp issue , MBR Partition table.

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MacBook Pro Bootcamp issue , MBR Partition table.

Hi everyone, i had this issue with boot camp 2 months ago and I wasn’t just trying and trying again and again and i successfully installed Windows 10 on boot camp on my MacBooks Pro 2012 retina 15 inch, few days ago windows crashed, and i lost all the files and entire Os, partition was empty, so I tried again to install, but I can’t, I’m just keep getting same error over and over again.

It goes normally by the time when I should choose what partition I want to use to install windows, and then this error pops up, and it says: ,,Windows cannot he installed to this disk. The selected disk has an MBR Partition table, on EFI systems Windows can only be installed to GPT disks.

Please if someone knows how to fix this please help me, this is driving me crazy.

Posted on Mar 17, 2018 8:41 AM

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Answer 1

Best reply

Loner T

Level 9

59,471 points

Mar 18, 2018 7:33 AM in response to FilipNosonja

FilipNosonja wrote:

Yes I used BC assistant, I can choose Windows, there are Mac OS, Windows and EFI, but if I choose windows it says no bootable device.

Is your USB a USB3 flash drive? If yes, it is unsupported. Only USB2 flash drives are supported because none of the Windows installers have USB3 drivers present in the installer. Either you can add them or switch to a USB2.

FilipNosonja wrote:

I installed Windows 10 about 10 times already and every time I done this way throw EFI... last time I had this issue, and now again I have this issue..

You can also remove the MBR using GPT Fdisk (https://sourceforge.net/projects/gptfdisk/). See MBR partition table, only GPT disk as an example. You may also need to disable SIP, if necessary.

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Answer 2

Loner T

Level 9

59,471 points

Mar 18, 2018 10:46 AM in response to FilipNosonja

Disable SIP.

Boot into Local Recovery using Command+R during Boot.

Click on Utilities -> Terminal
Type csrutil status
Type csrutil disable
Type csrutil status
If 'disabled' boot normally.

Remove MBR.

Start Terminal

Type sudo gdisk /dev/disk0 (Do not type such text)
x (Experts Menu)
n (New Protective MBR)
o (Print MBR)
p (Print partition table)
w (write)
y (Confirm write)
q (quit, if necessary)

Reboot and try to boot from the USB and use EFI Boot and test.

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Answer 3

FilipNosonja Author

Level 1

11 points

Mar 17, 2018 6:38 PM in response to Loner T

Yes, when I choose how much storage I want to use on Windows, it restarts, and then No bootable device... after that I force restart , option and choose EFI, and when I choose what partition I want to use, error pops up.

Thanks for helping me.

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Answer 4

Loner T

Level 9

59,471 points

Mar 18, 2018 6:35 AM in response to FilipNosonja

Your 2012 Mac is not a UEFI Mac. Choosing EFI Boot manually causes driver issues.

You will need to use the legacy BIOS (Windows) icon from the USB. If you do not see the Windows icon, was the Installer created by BC Assistant?

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Answer 5

FilipNosonja Author

Level 1

11 points

Mar 18, 2018 7:19 AM in response to Loner T

Yes I used BC assistant, I can choose Windows, there are Mac OS, Windows and EFI, but if I choose windows it says no bootable device. I installed Windows 10 about 10 times already and every time I done this way throw EFI... last time I had this issue, and now again I have this issue..

thanks again for replying me.

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Answer 6

Loner T

Level 9

59,471 points

Mar 18, 2018 12:31 PM in response to FilipNosonja

If SIP is disabled, both normally, and in macOS Terminal, run

sudo gdisk /dev/disk0

x

n

o

p

w

y

Reboot and test if you can install Windows.

If that does not work, find a USB2 flash drive, remove BC partition using BCA, re-run BCA and do not interrupt the flow with any keys till you see the Windows installer screen.

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Answer 7

FilipNosonja Author

Level 1

11 points

Mar 18, 2018 7:03 PM in response to Loner T

Windows cannot be installed to this disk. The selected disk has an MBR partition table. On EFI systems, Windows can only be installed to GTP disks.

Ok, but I don’t understand how I installed multiple times from same flash drive...?

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Answer 8

Loner T

Level 9

59,471 points

Mar 17, 2018 10:51 AM in response to FilipNosonja

Are you manually choosing the EFI Boot icon from the USB Installer using Alt/Option key?

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Answer 9

FilipNosonja Author

Level 1

11 points

Mar 18, 2018 9:04 AM in response to Loner T

Yes it is Usb 3.0 but i already installed Windows on same laptop with same flash drive, same method... So what should i do next? Remove MBR and Disable SIP?

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Answer 10

FilipNosonja Author

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Mar 18, 2018 9:23 AM in response to Loner T

I installed that software but I can’t find it...

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Answer 11

Loner T

Level 9

59,471 points

Mar 18, 2018 9:33 AM in response to FilipNosonja

GDisk needs to be run from the Terminal command line.

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Answer 12

FilipNosonja Author

Level 1

11 points

Mar 18, 2018 9:58 AM in response to Loner T

Ok, what exactly should i do in terminal..? Sorry but i don't have experience with these things..?

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Answer 13

FilipNosonja Author

Level 1

11 points

Mar 18, 2018 12:06 PM in response to Loner T

I disabled it, I have to remove MBR, just if you can explain it to me little bit better, sorry, I didn’t understand what should I type what I shouldn’t type...

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Answer 14

FilipNosonja Author

Level 1

11 points

Mar 18, 2018 12:49 PM in response to Loner T

Ok thank you very much, i understood you and done it successfully thanks, i will try to install windows now and tell you does it work this time.

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Answer 15

FilipNosonja Author

Level 1

11 points

Mar 18, 2018 1:59 PM in response to Loner T

I tried to install windows again , and again I have same problem, I don’t know what is the problem.. maybe I need usb 2.0 but I already installed several times with same usb flash on same laptop...

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MacBook Pro Bootcamp issue , MBR Partition table.

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