What Is an Active Partition?

September 26, 2023

An active partition is a hard disk drive (HDD) or a solid-state drive (SDD) partition designated in the partition table as bootable and containing the computer's primary operating system. Each drive can have only one active partition.

In Windows, only the primary partitions (the first four partitions) can be active. On Linux, bootloaders such as GRUB allow booting a system from non-active partitions.

Anastazija is an experienced content writer with knowledge and passion for cloud computing, information technology, and online security. At phoenixNAP, she focuses on answering burning questions about ensuring data robustness and security for all participants in the digital landscape.