Windows 10: How to create an Clean install a win 10 Home Core N.iso that will fit on a 4.7 GB dvd?

It needs to be bootable. I create one using windows creation Medea tool but it it always comes out 4,777,777 knows disk image file with a 4gig esd file and a 400 kb boot file in it as the largest sub filesI need it reduced by about .7 gb or 1 gb.Second solution can a iso file span multiple dvd’s

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How to create an Clean install a win 10 Home Core N.iso that will fit on a 4.7 GB dvd?

It needs to be bootable. I create one using windows creation Medea tool but it it always comes out 4,777,777 knows disk image file with a 4gig esd file and a 400 kb boot file in it as the largest sub files

I need it reduced by about .7 gb or 1 gb.

Second solution can a iso file span multiple dvd’s

 

?Do clean install of win 10 rtm and activate with win 8 or win 7 key.

I have about 8 computers at home and in my office that have either windows 7 or windows 8.

When RTM of windows is available I would like 4 isos 1) win 10 core 32 bit 2) Win 10 core 64 bit 3) win 10 pro 64 bit 4) win 10 prof 32 bit.

I would like to download 4 isos and burn 4 bootable DVD and install win 10 on all my computer and use my win 7 or win 8 key to activate? Will that be possible?

I really do not want to upgrade all 8 computers FIRST with win 10 , wipe the dis and then do a clean install from the iso. This would be wasteful of my time and bandwith

 

Upgrading to 10 from Win 7 with ISO

Sorry but i don't get it. I've read the article and i understand that for upgrading from Win 7 it's important to create a bootable device

Prepare Windows 10 ISO file

After you have downloaded the Windows 10 ISO, you need prepare it, this is especially important for Windows 7 users..

After obtaining the .iso file you can use the built in Disc Image burning tool or Microsoft .iso to USB/DVD tool to
create a bootable DVD or USB (requires a blank DVD or USB flash stick of at least 4 GB).

But later in the example with images, you just run the Win 10 setup into a Win 7 PC like a simple installation.

Does that mean that you have to burn the ISO into a blank DVD to make it work? Can't i make the same thing by mounting an image into a virtual drive?