7 of 10Image
Default is lvm
After clicking Storage Installation Destination and then selecting the disk you want to install on, you will get this screen with installation options.
The exact content of the upper part of the window will depend on how your disk is partitioned and how much free space you have. In the lower portion of the window you will find a Partition Scheme Configuration drop-down. Fedora uses lvm disk management by default, if you want to use standard partitions you have to click this drop-down and select that option.
If you want to specify the partition layout yourself, you have to click the I don't need help box. anaconda will then not try to figure out a partition layour for you, when you click Reclaim space it will simply take you to the next screen where you can do it all yourself. I found this a bit scary, I didn't want it to reclaim space, I want to tell it myself which existing partition to reuse, but you have to click that button to go on.
Select existing to overwrite
This is the initial view of the existing disk partition layout.
Don't be confused or intimidated by my rather large number of partitions, a more typical one will probably have something like one to four partitions, depending on what is already installed.
If you want to reuse an existing partition, click the drop-down for that installation in the list. Then select the partition you want to reuse, and its details will be shown at the right side of the window.
In the Mount Point input box, enter what you want to use this partition for (it is / in this case). You must also click the drop-down for Customize... and then click the Reformat box, and then click Apply Changes.
Old root partition has been taken for new installation
After applying the changes in the previous screen, click the drop-down beside New Fedora 18 Installation and you should see the root partition that you are reusing.
If there is a swap partition on the disk, it will be picked up for this installation automatically at this point. Click Finish Partitioning to commit the changes and return to the installation summary.