Manual Partitioning
The `Manual Partitioning` screen allows you to create a storage configuration for your {PRODUCT} system manually, giving you a greater control over your system's storage.
In most other installers for both Linux and other operating systems, disk partitioning usually takes a "bottom-up" approach. In these installers, you first create underlying devices such as LVM physical volumes, then you create a layout such as LVM on top of them, then you create file systems on top of logical volumes, and the last step is usually assigning a mount point to each volume as needed.
[application]*Anaconda* uses an opposite approach. First, you create all separate mount points you need, and everything needed to create them (creating a volume group, logical volumes inside it, and physical volumes where the volume group will reside) is performed automatically. You can then adjust the automatic settings as you require.
No permanent changes will be made to your disks during the actual partitioning process. The configuration you have selected will only be written to your system after you press the `Begin installation` button in xref:Installing_Using_Anaconda.adoc#sect-installation-gui-installation-summary[Installation Summary].
The Manual Partitioning screen. At this point
When you first open the `Manual Partitioning` screen, the column on the left side will display all previously existing partitions on all drives which you selected as installation targers in xref:install/Installing_Using_Anaconda.adoc#sect-installation-gui-storage-partitioning[Installation Destination]. If none of the selected drives contain any existing partitions, then a message informing you that no mount points currently exist will appear.
Here, you can choose a partitioning scheme such as `LVM` or `BTRFS` and click the `Click here to create them automatically` to prompt the installer to create a basic partitioning layout; this layout follows the guidelines described in xref:Installing_Using_Anaconda.adoc#sect-installation-gui-manual-partitioning-recommended[Recommended Partitioning Scheme]. The created layout is a basic layout where partition/volume sizes are determined automatically based on the total amount of available space.
Click the `+` button to add a mount point. In the dialog window that opens, choose a mount point such as `/` or `/home`, and the desired capacity for the mount point (such as `10GB` or `500MB`). Note that specifying the mount point is mandatory, but you do not have to specify the capacity at this point; this is useful when adding a mount point which you want to make larger than the current available space permits. Then, click `Add mount point` to add it to the list using the default settings, which means it will be created as a logical volume, and a new volume group will be created for it unless one already exists.
Then, select the newly created mount point in the list on the left side. A set of controls will display on the right side of the screen, allowing you to change its mount point, the device on which it will physically reside, its capacity, file system, etc. When you change any settings, press `Update Settings` on the bottom right. This will save the adjusted configuration; you can now create another mount point, or select a different existing one and adjust its settings as well.
For a description of available device and file system types, see xref:Installing_Using_Anaconda.adoc#sect-installation-gui-manual-partitioning-filesystems[Device, File System and RAID Types].
To remove a mount point, select it in the list and press the `-` button below.
The exact steps for configuring your storage depend on your specific needs and your system configuration. Procedures for creating specific layouts are described further in this chapter. Before you start, you should also review xref:Installing_Using_Anaconda.adoc#sect-installation-gui-manual-partitioning-recommended[Recommended Partitioning Scheme] and xref:Installing_Using_Anaconda.adoc#sect-installation-gui-manual-partitioning-advice[Advice on Partitions] for a list of requirements and tips for partitioning your disks for {PRODUCT}.
Below the list of existing mount points are two fields, showing you how much free space is left on your storage devices and how much total space they have.
Click the `pass:attributes[{blank}]_X_ storage devices selected` to view a summary of currently selected storage devices; this may help you with orientation in more complicated storage schemas. Devices displayed here are the ones you have selected in xref:install/Installing_Using_Anaconda.adoc#sect-installation-gui-storage-partitioning[Installation Destination]. If you want to add or remove any storage devices from your configuration, return to that screen and change your selection.
You can press the `Reset All` button in the bottom right corner at any time to reset the storage configuration to the state it was in when you last opened the `Manual Partitioning` screen. This means that if you modify the storage configuration, leave the screen, and then come back, the Reset button will reset the configuration back to the already modified state, discarding only the changes you have made recently, not all changes to the storage configuration since you booted the installer.
To discard all changes, and to also detect any new drives which have not been detected when the installer started (usually when you attached a new drive after you started), press the button marked by a circular arrow in the set of controls below the list of mount points on the left side of the screen. In the dialog window that opens, press `Rescan Disks` and wait until the scanning process completes. Then, press `OK` to return to xref:install/Installing_Using_Anaconda.adoc#sect-installation-gui-storage-partitioning[Installation Destination]; all detected disks including any new ones will be displayed in the `Local Standard Disks` section.
Rescan Disks
The Rescan Disks dialog