Oh no, I got it wrong!
Oh no, I got it wrong!
Here are some updates: lots and lots of changes happening now!
I retrieved it from a disk. The 64-bit version was created by formatting the USB drive and then transferring files from the original disk onto it.
Please share the screenshot or reference of the post. Let me know what file you took it from.
4.9GB is sufficient. During installation, Windows setup will pull files and create many others. After setup, it will reach around 20GB. The minor size change might come from the ISO creator software, depending on how it handled the DVD disk replication, and the actual size can differ by region since Windows comes with local language versions. Once you install Windows 8.1, everything should work properly.