If you’re still now able to upgrade to Windows 10 and the new OS download Bits folder $WINDOWS.~BT if not progressing further in size from 3.2 GB, you better run Media Creation Tool offered by Microsoft to upgrade to Windows 10 quickly.
Upgrade to Windows 10 from Windows 7 0r 8.1 using Media Creation Tool
1. Download and run this tool on PC you wish to upgrade (no reservation is required for this)
2. Select ‘Upgrade this PC now’ and click ‘Next’
3. Wait patiently for the tool to download and install Windows 10 on your Windows 7 or 8.1 PC to upgrade.
Notice this ‘$Windows.~WS’ folder in your C drive growing bigger in size as the download progresses further.