Boot Camp Assistant stuck loading at around 40%

I've recently decided to use windows on my mac, so this is my first time using windows.


Basic details:


Computer: iMac Retina 4k, 21.5-inch, Late 2015


Windows Version: Windows 10 64bit ISO file from the Microsoft website


I copied the Windows ISO onto a 16gb USB then deleted the one downloaded on my computer

At one point through installation, my iMac turned off, displaying a black screen with my cursor on load. It was stuck like this for around 40 Minuets, until I was presented with the login screen. Everything is back to normal, however my Bootcamp assistant is stuck, and will not load any further than around 40% (The text above displays "Partitioning disk...").

Right now I'm unsure If I should quit bootcamp and start again, just in case something goes wrong.

What should I do?

iMac, macOS High Sierra (10.13.6)

Posted on Aug 31, 2018 6:10 AM

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7 replies

Aug 31, 2018 6:18 AM in response to Tavish Degroot

Tavish Degroot wrote:


I copied the Windows ISO onto a 16gb USB then deleted the one downloaded on my computer


This will not work. The ISO must be unmounted and should not be in the Downloads folder.


Tavish Degroot wrote:


Right now I'm unsure If I should quit bootcamp and start again, just in case something goes wrong.

What should I do?

You need to quit BCA and cleanup and restart BCA steps again.

Aug 31, 2018 7:01 AM in response to Loner T

Here:


/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Macintosh HD 585.0 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s6

4: Microsoft Basic Data OSXRESERVED 8.0 GB disk0s4

5: Microsoft Basic Data BOOTCAMP 406.3 GB disk0s5


/dev/disk1 (external, physical):

#: TYPE NAME SIZE IDENTIFIER

0: ALL PHOTOS *500.1 GB disk1


/dev/disk3 (external, physical):

#: TYPE NAME SIZE IDENTIFIER

0: FDisk_partition_scheme *16.0 GB disk3

1: Windows_FAT_32 XBOX 360 16.0 GB disk3s1


/dev/disk4 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: CCSA_X64FRE_EN-GB_DV5 +4.2 GB disk4

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Boot Camp Assistant stuck loading at around 40%

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