Thanks for your response George. but your answer doesn't tell me what to do.
If I select automatic, and there is space available for Fedora, will it proceed to install F alongside Win in a dual boot setup?
Or will it clean the whole disk and leave only Fedora?
If there is anything of value on the disk, don't update without a backup.
With automatic partitioning, you can also select the I would like to make additional
space available
option below. Use this option if you want to reclaim space from an
existing
partitioning layout - for example, if a disk you want to use
already contains a different operating
system, and you want to make this
system’s partitions smaller to allow more room for Fedora.
The Reclaim space dialog which opens if this option is selected is described later in this section.
I prefer to use Windows tools to make a Windows partition smaller -- Fedora developers can never know
what details of the Windows partition layout and format might change.