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The partitioner used in debian-installer is fairly versatile. It allows to create many different partitioning schemes, using various partition tables, file systems and advanced block devices.
Exactly which options are available depends mainly on the architecture, but also on other factors. For example, on systems with limited internal memory some options may not be available. Defaults may vary as well. The type of partition table used by default can for example be different for large capacity hard disks than for smaller hard disks. Some options can only be changed when installing at medium or low debconf priority; at higher priorities sensible defaults will be used.
The installer supports various forms of advanced partitioning and use of storage devices, which in many cases can be used in combination.
• Logical Volume Management (LVM)
• Software RAID
Supported are RAID levels 0, 1, 4, 5, 6 and 10.
• Encryption
• Multipath
See our Wiki (https://help.ubuntu.com/lts/serverguide/dm-multipath-chapter.html) for information. Support for multipath is currently only available if enabled when the installer is booted.
The following file systems are supported.
• ext2r0, ext2, ext3, ext4
The default file system selected in most cases is ext4; for /boot partitions ext2 will be selected by default when guided partitioning is used.
• jfs (not available on all architectures)
• xfs (not available on all architectures)
• reiserfs (optional; not available on all architectures)
Support for the Reiser file system is no longer available by default. When the installer is running at medium or low debconf priority it can be enabled by selecting the partman-reiserfs compo- nent. Only version 3 of the file system is supported.
• jffs2
Used on some systems to read flash memory. It is not possible to create new jffs2 partitions.
• FAT16, FAT32
6.3.3.2. Guided Partitioning