# Partition alignment

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Proper alignment of partitions in data storage device

**Partition alignment** is the proper alignment of [partitions](/source/Disk_partitioning) to the boundaries available in a [data storage](/source/Data_storage) device.

Examples include the following:

- [4 KB sector alignment](/source/4_KB_sector_alignment) with hard disk drives supporting Advanced Format (AF)

- [Track partition alignment](/source/Track_partition_alignment), partitions starting on track boundaries on hard disk drives

- [Cylinder partition alignment](/source/Cylinder_partition_alignment), partitions starting on logical or physical cylinder boundaries on hard disk drives

- [SSD partition alignment](/source/SSD_partition_alignment), partitions starting on NVM boundaries (with typically 4 KB to 1 MB in LBAs size) on SSDs and other flash-based memory devices

- [RAID stripe alignment](/source/RAID_stripe_alignment), partition alignment based on stripe boundaries

## See also

- [Advanced Format](/source/Advanced_Format)

- [Data striping](/source/Data_striping)

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Adapted from the Wikipedia article [Partition alignment](https://en.wikipedia.org/wiki/Partition_alignment) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Partition_alignment?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.