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Distributing swap space over multiple storage devices - particularly on systems with fast drives, controllers and interfaces - also improves swap space performance.
BIOS Boot (1 MB) or EFI System Partition (200 MB)
The [application]*GRUB2* boot loader can be installed either in the _Master Boot Record_ (MBR) or the _GUID Partition Table_ (GPT) of the boot device. In order to determine which of these methods to use, the installation program considers the following variations:
Systems with BIOS firmware and UEFI systems in BIOS compatibility mode
If the disk is already formatted, the partitioning scheme is retained. If the disk is not formatted, or you have erased all existing partitions from the disk, the installer will choose the following:
MBR if the size of the disk is less than 2 TB (terabytes)
GPT if the size of the disk is more than 2 TB
You can force the installer to use GPT on disks smaller than 2 TB by using the [option]#inst.gpt# boot option as described in xref:advanced/Boot_Options.adoc#chap-anaconda-boot-options[Boot Options]. However, the opposite is not possible - you can not use MBR on disks larger than 2 TB.
You need to create a _BIOS Boot_ partition with a size of 1 MB to install on a system with BIOS firmware if the disk containing the boot loader uses GPT. If the disk uses a MBR, no special partition is necessary on a BIOS system.
Systems with UEFI firmware
Only GPT is allowed on UEFI systems. In order to install on a formatted disk with a MBR, it must be reformated and relabeled. All data currently on the disk will be lost.
UEFI-based systems require an _EFI System Partition_ at least 50 MB in size (recommended size is 200 MB), regardless of the partitioning scheme.
If your system requires either a BIOS Boot partition or an EFI System Partition based on the requirements detailed above, this partition must be created as a standard physical partition. It can not reside on an LVM volume or a Btrfs subvolume.
Also note that if your system does not require any of these partitions, they will not be shown in the `File System` menu in mount point options.
Many systems have more partitions than the minimum listed above. Choose partitions based on your particular needs. See xref:Installing_Using_Anaconda.adoc#sect-installation-gui-manual-partitioning-advice[Advice on Partitions] for additional information and advice.
Only assign storage capacity to those partitions you require immediately. You may allocate free space at any time, to meet needs as they occur.
If you are not sure how best to configure the partitions for your computer, accept the automatic default partition layout provided by the installation program as described in xref:install/Installing_Using_Anaconda.adoc#sect-installation-gui-storage-partitioning[Installation Destination].