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9.13. Reclaim disk space

If you chose to shrink or remove existing partitions at the Installation Options dialog (refer to Section 9.11, “Storage and partitioning”) in the Installation Destination section, you will be directed to the Reclaim Disk Space tool.
Reclaim disk space from existing filesystems
The dialog allows you to preserve, shrink, or delete existing filesystems to generate necessary space to install Fedora.
Figure 9.29. Reclaim disk space from existing filesystems

The existing filesystems Fedora has detected will be listed in a table as part of their respective disks. The Reclaimable Space column lists the space that could be reassigned to this installation. The Action column lists what action will be taken with the filesystem to reclaim space.
Beneath the table are three buttons:
Select a filesystem from the table with your mouse and click one of the three buttons, or click Delete All to clear all reclaimable filesystems (the disks will not be touched at this point). The label in the Action column will change to match your selection and the amount of Total selected space to reclaim displayed beneath the table will increase or decrease in response. Beneath this value is the amount of space the installation requires based on the packages you have selected to install (refer to Section 9.10, “Software Selection”).
If you click the Shrink to button, a slider will appear next to it representing the size of the selected filesystem. Use your mouse to shrink the filesystem by dragging the indicator to your chosen size. The lowest possible size is displayed at the left-hand end of the slider.
When enough space has been reclaimed for the installation to proceed, the Reclaim Space button will become available. Click this button to return to the Installation Summary Menu and proceed with the installation.