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Position : DiskGenius - Help - Active Partition (Mark Partition as Active)

Active Partition (Mark Partition as Active)

An active partition is a primary partition on an MBR disk and set as the bootable partition that contains operating system. Only one partition on each hard drive can be set as an active partition.

Step 1  To active a partition, please right-click on the primary partition and select "Mark Partition As Active" from context menu.

Active Partition

Step 2  Click Save All button to make the change into effect.

If you want to remove Active mark for the partition, you can right-click on it and select "Remove Partition's Active Mark", as follows:

Active Partition