If you performed a
refresh of Windows 8,
upgrade to Windows 8, or a custom install of Windows 8 without formatting the drive for a
clean install and selected to install Windows 8 on the same partition of the previous Windows installation, then you may have a
C:\Windows.old folder left over in your new installation. The Windows.old folder contains a copy of the previous Windows installation, and can be quite large in size.
If you already had a
C:\Windows.old folder in the installation that you performed a refresh, upgrade install, or a custom install on, then it may be renamed to say
C:\Windows.old.000 (older previous installation) in addition to the
C:\Windows.old folder. The most recent previous installation will always be in the
C:\Windows.old folder.
This tutorial will show you how to delete the
Windows.old folder(s) generated during the installation to free up the hard drive space that the
Windows.old folder(s) takes.