How to get the Windows 10 Fall Creators Update

radiohowie said:

I've got 16299, the FCU, on a 7.46 Gb thumb drive. Only took up 3.46 Gb of space.

It depends on what you are downlading eg a dual 32/64 bit is over 6GB.

Kol12 said:

Does anyone know the size of the ISO? Will a 4GB USB be enough?

Thrash is right . . . even back when we were told 4 GB would work, it wouldn't for me. I've used 8 GB ever since and everything's fine.

Kol12 said:

4GB USB drives seem pretty rare these days anyway.

Even 8 GB drives are rare.

The latest Media Creation Tool I downloaded, ( earlier today), for just 64Bit, clearly stated that 8Gb was the minimum size required for a ThumbDrive, and there was also some blurb for anyone using DVD which had to be Dual Layer

I want to say this once here, there is no need to use a thumbdrive to install an .iso, instead use an .iso handler such as Winrar and save some time and grief. Only if you are changing from 32 to 64 do you need to boot to a drive.

I wanted to go from Windows 10 Enterprise 1703 to Windows Pro 1709 so a fresh install with a thumbdrive was the best way to go, as I needed to revise partitioning at the time of the install If you have an ISO and want to just upgrade then mount the ISO and and run setup from within the current windows build