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8.16.2. Adding Partitions

To add a new partition, select the Create button. A dialog box appears (refer to Figure 8.38, “Creating a New Partition”).


You must dedicate at least one partition for this installation, and optionally more. For more information, refer to Appendix A, An Introduction to Disk Partitions.
Creating a New Partition
Creating a new partition.
Figure 8.38. Creating a New Partition File System Types

Fedora allows you to create different partition types and file systems. The following is a brief description of the different partition types and file systems available, and how they can be used.
Partition types
  • standard partition — A standard partition can contain a file system or swap space, or it can provide a container for software RAID or an LVM physical volume.
  • swap — Swap partitions are used to support virtual memory. In other words, data is written to a swap partition when there is not enough RAM to store the data your system is processing. Refer to the Fedora Deployment Guide for additional information.
  • software RAID — Creating two or more software RAID partitions allows you to create a RAID device. For more information regarding RAID, refer to the chapter RAID (Redundant Array of Independent Disks) in the Fedora Deployment Guide.
  • physical volume (LVM) — Creating one or more physical volume (LVM) partitions allows you to create an LVM logical volume. LVM can improve performance when using physical disks. For more information regarding LVM, refer to the Fedora Deployment Guide.
File systems
  • ext4 — The ext4 file system is based on the ext3 file system and features a number of improvements. These include support for larger file systems and larger files, faster and more efficient allocation of disk space, no limit on the number of subdirectories within a directory, faster file system checking, and more robust journalling. The ext4 file system is selected by default and is highly recommended.
  • ext3 — The ext3 file system is based on the ext2 file system and has one main advantage — journaling. Using a journaling file system reduces time spent recovering a file system after a crash as there is no need to fsck [3] the file system.
  • ext2 — An ext2 file system supports standard Unix file types (regular files, directories, symbolic links, etc). It provides the ability to assign long file names, up to 255 characters.
  • xfs — XFS is a highly scalable, high-performance file system that supports filesystems up to 16 exabytes (approximately 16 million terabytes), files up to 8 exabytes (approximately 8 million terabytes) and directory structures containing tens of millions of entries. XFS supports metadata journaling, which facilitates quicker crash recovery. The XFS file system can also be defragmented and resized while mounted and active.
  • vfat — The VFAT file system is a Linux file system that is compatible with Microsoft Windows long filenames on the FAT file system.
  • Btrfs — Btrfs is under development as a file system capable of addressing and managing more files, larger files, and larger volumes than the ext2, ext3, and ext4 file systems. Btrfs is designed to make the file system tolerant of errors, and to facilitate the detection and repair of errors when they occur. It uses checksums to ensure the validity of data and metadata, and maintains snapshots of the file system that can be used for backup or repair.
    Because Btrfs is still experimental and under development, the installation program does not offer it by default. If you want to create a Btrfs partition on a drive, you must commence the installation process with the boot option btrfs. Refer to Chapter 10, Boot Options for instructions.

    Btrfs is still experimental

    Fedora 15 includes Btrfs as a technology preview to allow you to experiment with this file system. You should not choose Btrfs for partitions that will contain valuable data or that are essential for the operation of important systems.

    Btrfs is not supported for LiveCD installs

    Installation using Btrfs is not supported for LiveCD installs as the installer needs the btrfs option passed and btrfs-progs to be installed.

[3] The fsck application is used to check the file system for metadata consistency and optionally repair one or more Linux file systems.