Missing Windows 10 Partition - Huge problem!

Hello tech experts of Apple,

I own a Late 2013 MacBook Pro 512GB.

I was installing Windows 10 via a USB drive, and I allocated 100GB for the Windows Partition.

Towards the end of the partitioning process, my laptop crashed. I rebooted the computer, holding down the 'option' key, and I was able to choose and boot into the Windows installation screen. However, during the installation process, the partition page did not show the 100GB of storage I allocated for Windows, instead it only showed the total storage of my computer, which was 467GB. This means the 100GB partition was missing!

So I rebooted back to MacOS. I opened Bootcamp and the uninstall Windows partition option was greyed out. I opened Disk Utility and in the partition page I can't even see the Windows Bootcamp partition!

Now what do I do?

Thank you!

Posted on Apr 10, 2017 1:37 PM

52 replies

Loner T

Level 9

59,536 points

Apr 11, 2017 9:49 AM in response to 13yhby

Can you install GPT Fdisk - https://sourceforge.net/projects/gptfdisk/ ?

13yhby Author

Level 1

8 points

Apr 11, 2017 12:22 PM in response to Loner T

Installed!

13yhby Author

Level 1

8 points

Apr 11, 2017 3:58 PM in response to Loner T

Will this erase my data? I have not done a backup yet.

13yhby Author

Level 1

8 points

Apr 11, 2017 4:18 PM in response to Loner T

Oh my! I'm no longer getting the partition error when opening bootcamp!

I'm going to try to install Windows now and then let you know the results.

Many thanks for now.

Loner T

Level 9

59,536 points

Apr 11, 2017 4:33 PM in response to 13yhby

Was the repairDisk successful?

13yhby Author

Level 1

8 points

Apr 11, 2017 5:35 PM in response to Loner T

Seriously. Everything works fine now. Windows 10 is successfully installed! Thank you, so, so much for your great help these 2 days.

Loner T

Level 9

59,536 points

Apr 11, 2017 5:42 PM in response to 13yhby

Excellent. Please remember to back up OS X, Windows and create a Windows System Restore point for future recovery.

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Missing Windows 10 Partition - Huge problem!