Windows 10 October Update ISO Doesn't Fit on Standard DVD

Hello, everyone. I'm running Windows 10 Professional.
This morning, I updated my system to the October Update. No problems or issues. But I always like to make a copy of bootable media for updates, just in case. I typically prefer to install Windows 10 updates on a clean PC.

Anyway, I downloaded the media creation tool, and chose to create an ISO, which I would then burn to a standard blank DVD.
After it downloaded, I attempted to burn the ISO file, using a freeware program called Burn Aware. Burn Aware said there was not enough space on the blank DVD. It needed roughly 172 MB. That's never happened before.

So, I tried burning the DVD using another burning program, called Any Burn. That didn't work, either. Eventually, I burned the ISO onto a couple of 8GB USB flash drives, using Any Burn. I haven't tested them out yet, but I think they'll work.

I have a few older Update DVD's from this past spring and last fall, just in case the USB drives don't work. I also updated my bootable rescue DVD for Macrium Reflect, and made a new full system backup...just in case.

Has anyone else experienced this problem? I find it very odd and unusual that a blank DVD cannot hold a Windows 10 Update.

Thank you! Jd

Thank you for replying. My internal CD/DVD writer is old and doesn't really burn dual layer discs very well. I have two external CD/DVD burners, and they do not like dual layer discs...even though they are supposed to support them. So, burning a dual layer disc is very difficult for me.

Fortunately, I do have several USB flash drives of varying sizes. This morning, I burned the ISO onto two 8GB USB drives. I'm going to have to try them out.

But don't you agree...it's a bit odd and unusual for a Windows 10 Update to be just a bit too large for a standard DVD?

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Hmmm.... I wonder if that HeiDoc thing will let me download just the Pro version. I'll look into it. Thanks for that link.

I just finished downloading the ISO file, and I admit I'm confused. The ISO file is 6 GB. What do I do with it now? I admit I'm lost. I just opened up the ISO file to view its contents, and it seems to be one DVD.

I have a feeling I'm not understanding something. Please follow me here.

The ISO file that I downloaded from Microsoft, via the Media Creation Tool, is too large for a standard DVD.

That's because it contains several versions of Windows 10. Or, whatever reason.

You directed me to the HeiDoc site, where there's a utility to download a different ISO file that contains only the Home and Pro versions.

I downloaded it, and it's 6 GB. It's actually bigger than the ISO file I got directly from Microsoft.

I do not understand. I must be doing something wrong. Why is the HeiDoc ISO file with only the Home and Pro versions on it actually larger than the ISO file from Microsoft, that has four versions on it?

Why should I bother downloading from the HeiDoc site, when BOTH ISO files require a dual layer DVD? What's the point?

Am I missing something here? I did...let me repeat that...I did burn the Microsoft ISO onto two 8 GB USB flash drives with apparently no problem.

But the point of this reply is: If I didn't do anything wrong when I downloaded the ISO file from HeiDoc, then what's the point of the HeiDoc ISO file when it's actually larger than Microsoft's?

Does that make sense?

Okay, thank you. Not a real, real big deal, as long as the USB drives function properly. I prefer them, honestly, but I like to cover all the bases when it comes to installing an OS clean.

Almost any other method of obtaining the Windows 10 ISO file other than the Media Creation Tool will get you an ISO file with install.wim in it instead of install.esd. Install.esd is a compressed form of install.wim that takes up less space, so ISO files with install.wim in them will always be 1-2 GB (or more) larger than the MCT ISO file with install.esd in it.