boot camp does not recognize windows 10 iso

dreda38 wrote:

Persistence is the key, just be vigilant on your download and hope your internet is going smoothly, if you let the download sit it might timeout or just end early on you; you can right click the final download and "get info" it to see the size, if it's below 3.7gb there's a good chance it's corrupted. Microsoft support refused to admit any culpability of course, and said the final download size could range dramatically, but I think if it's below 3.5GB like my first 3 were, you will probably have issues and should try again. To be fair to Microsoft, my final, successful download size was just north of 4gb when I 'get info' inspected it.

I understand you are not defending M$, but there is enough technology to download and verify the integrity without the user having to worry about it. If it is hard to implement such code, publishing the following for each ISO is very easy.

:Downloads $ ls -lgh Win10_English_x64.iso

-rw-r--r--@ 1 staff 3.8G Jul 10 2015 Win10_English_x64.iso

:Downloads $ openssl md5 Win10_English_x64.iso

MD5(Win10_English_x64.iso)= 23e397a21a9e01f141c64b7e1260314a

:Downloads $ ls -lg Win10_English_x64.iso

-rw-r--r--@ 1 staff 4083853312 Jul 10 2015 Win10_English_x64.iso

Perhaps M$ should provide the ISOs for Apple to be hosted on Apple's SDN. 😀

Did you ever get this fixed? (without a restore preferably) It's ridiculous that you can't just reinstall Bootcamp assistant, because I know for a fact the iso I'm using has worked before. This error started showing up after my MacBook Pro failed to install Windows correctly and after I had to search the deepest places of the web to solve that broken partition and unite my ssd again, when I try to reinstall Windows this is the error I get, same as you OP. I have no idea what to do as I need to bootcamp Windows on my Mac for work reasons but have too many configurations on my Mac to even consider a restore (no backup). Thanks

Can you start a new discussion and post the exact error message (or a screen shot), if possible?

Here's how to solve this problem definitively without fail.

(If you have a bona fide Windows 10 license key, that is.)

Note, there are SEVERAL OFFICIAL DOWNLOAD SITES FOR WINDOWS 10 ON MICROSOFT'S WEBSITE.

There is a specific download website for Mac OS X users seeking an ISO to create an install disk to be used with bootcamp.

Here is the specific download site mentioned above: https://www.microsoft.com/en-us/software-download/windows10ISO

You can also navigate to the above link logically from, wait for it, an actual Apple support page: https://support.apple.com/en-gb/HT204990

(But I won't be too smug since I made exactly the same mistake as others reading this before I worked out a solution).

Generic Windows 10 iso download sites look like they will do, but we all know from experience that they will provide ISOs which will invoke the error messages that are well-known in this thread.

It's not entirely clear what discernible differences there are in the ISOs themselves, though I noted the 'correct' ISO was at least 2 G larger than the one I downloaded from the generic Windows 10 ISO site.

Get the ISO that MSFT specifically says is meant for bootcamp and it will work.

Enjoy.

Thank you dreda38

This was the only issue, the entire .iso didn't download properly. So I spent hours waisting away trying to find a solution. Yours was the only one that mentioned to check the size of the download and sure enough it was only 2.2 gigs. Re-downloaded it and its not a whopping 4g and works like a charm. Thanks!

I did this today and it worked. I got my Insider Preview ISO from here: https://www.microsoft.com/en-us/software-download/windowsinsiderpreviewiso

I am running in a late 2012 MacBook Pro Retina Display 13 inch 2.5 GHz (MacBook 10,2)

Thank you so much for pointing out two things:

1) Any solution that requires a Windows machine *might* not work for a lot of us because we don't have one. Most of us are probably trying to dual boot Windows on our Macs because we do not have access to a Windows machine.

2) Pointing out that a smaller than expected file size probably indicates a corrupt .ISO, which in my case turned out to be the case.

Thanks man, hopefully this will solve my problem when I am able to get a complete download, which is under way at this time. (my previous download was <2gb)

The problem with the download timing out may not be an issue with Microsoft's servers but with Google Chrome:

http://andrew.technology/chrome-issue-downloading-windows-10-iso-from-microsoft/

I had no problem downloading the ISO through Safari but it failed several times through Chrome.

U need to rename the .ISO to recognisable one like : Win10_1511_N_English_x64.iso. Then you have to proceed to the download of WIndows support software.

It took four goes for it to download in full. The first time failed and the next two were 3-point-something GB. The last one in Finder was 4.41GB. That's the bottom line! Thanks.

I think I've solved this issue in a much simpler way than people have proposed in this thread. Not putting it past Apple to sometimes be stubbornly incompetent I tested simply converting the iso to a dmg in disk utility. And yup, worked. So, probably nothing wrong with the various isos spread over MS' site, just Apple's signature checks.

How are you all missing that your downloads don't finish though? Every browser I use make it fairly clear when something's been interrupted.

Please post the md5sum of your ISO.

acocabob wrote:

Not putting it past Apple to sometimes be stubbornly incompetent I tested simply converting the iso to a dmg in disk utility. And yup, worked. So, probably nothing wrong with the various isos spread over MS' site, just Apple's signature checks.

M$ is equally incompetent by not publishing MD5sum of ISOs on their download web site. 😉

How are you all missing that your downloads don't finish though? Every browser I use make it fairly clear when something's been interrupted.

Interruption is not the issue, but the block level corruption during the download, especially over a low-speed wireless connection.

You seem to be the only person who successfully installed Windows on this Retina MacBook. So maybe you can help me. First, Bootcamp don't ask me if I want to create a USB install at all, when I open BC, and click "Continue" It just ask me to choose my ISO file. Wich I did (I tried multiple ISOs, even via Windows 10 media creation tool). But when the computer restarts I can't use my trackpad or my keyboard, I have to plug a USB one in USB, but even when i do that, the installer won't find any ssd to install windows on. I'm losing hope guys...

MD5 (Win10_1607_EnglishInternational_x64.iso) = 57532598fd918fec63b287ea4228515e

4.24 gb

Point being, though, that I think there are two separate issues here - corrupted files, but also (as in my case) valid files that for some reason aren't accepted. I tried downloading from MS multiple times, even torrented one (so def correct) after the proper didn't work, but BCA would have none of it.

People were talking about small file sizes which is why I thought it was about unfinished downloads, sorry.

And surely MS universal incompetence goes without saying...

GenreDown wrote:

First, Bootcamp don't ask me if I want to create a USB install at all, when I open BC, and click "Continue" It just ask me to choose my ISO file. Wich I did (I tried multiple ISOs, even via Windows 10 media creation tool). But when the computer restarts I can't use my trackpad or my keyboard, I have to plug a USB one in USB, but even when i do that, the installer won't find any ssd to install windows on. I'm losing hope guys...

This is normal and expected. Please see https://help.apple.com/bootcamp/assistant/6.0/#/bcmp173b3bf2 as a reference. If your ISO is corrupt, BC Assistant will reject it. Please run SMC and NVRAM Reset before you next attempt and do not connect any external storage.

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

How to Reset NVRAM on your Mac - Apple Support

The official ISOs are available at https://www.microsoft.com/en-us/software-download/home .