Bootcamp: Windows 10 USB Installation cannot find bootcamp partition

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Level 1

16 points

Bootcamp: Windows 10 USB Installation cannot find bootcamp partition

Hi,

I've deleted the old windows 10 partition, using bootcamp, to upgrade the space in itself.

I've run BootCamp again to installa windows 10 pro, as I had already installed on my iMac late 2012 21,5", and the assistant correctly install on an USB key my Windows 10 ISO and all support software downloaded from Apple.

After reboot start the Windows 10 setup until the selection of partition.

I, as the instruction says, select BOOTCAMP partition and Format. Then I click on Next but Windows says:

"I cannot create or find a partition..."

So I cannot install it... What happens? How can I solve this issue that never before appeared?

Thank you

iMac, OS X El Capitan (10.11.6)

Posted on Jul 23, 2016 12:18 PM

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Answer 1

Loner T

Level 9

59,536 points

Jul 23, 2016 4:34 PM in response to lucablue77

Disconnect all external storage, run the following two procedures and then connect only the USB Flash drive containing the W10 installer.

Reset the System Management Controller (SMC) on your Mac - Apple Support

How to Reset NVRAM on your Mac - Apple Support

Please also see Boot Camp: "We couldn't create a new partition or locate an existing one" alert during Windows 8 install - Apple Support .

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Answer 2

lucablue77 Author

Level 1

16 points

Jul 24, 2016 8:06 AM in response to Loner T

I understood the problem was the NVRAM.

I've cleaned it and re-run Boot Camp, after this all works normally.

Thank you for help

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Answer 3

Loner T

Level 9

59,536 points

Jul 24, 2016 8:27 AM in response to lucablue77

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

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Answer 4

lucablue77 Author

Level 1

16 points

Jul 24, 2016 8:40 AM in response to Loner T

In OSX I've always Time Machine active, so no problem.

In Windows I could create a backup, but If happens this again, how can I install it through Boot Camp? I need to create an USB KEY from it instead of Microsoft iso?

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