Partition alignment

Partition alignment is the proper alignment of partitions to the boundaries available in a data storage device.

Examples include the following:

• 4 KB sector alignment with hard disk drives supporting Advanced Format (AF)
• Track partition alignment, partitions starting on track boundaries on hard disk drives
• Cylinder partition alignment, partitions starting on logical or physical cylinder boundaries on hard disk drives
• SSD page partition alignment, partitions starting on NVM page boundaries (with pages typically 4 to 16 KB in size) on SSDs and other flash-based memory devices
• SSD block partition alignment, partitions starting on NVM block boundaries (typically blocks of 128 to 512 pages) on SSDs and other flash-based memory devices
• 1 MB partition alignment, partitions starting on 1 MB boundaries
• RAID stripe alignment, partition alignment based on stripe boundaries

See also[]

• Advanced Format
• Data striping

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